Digital Sidereal Clock
- Flyhigh7
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Digital Sidereal Clock
I've been looking for a digital Sidereal Clock that I can program in my location and it would always display the current Sidereal time at my zenith. I know based on my location (now) that Sidereal Time is 2 hours behind my current standard time. So at 10PM it will be about 8h sidereal time, but this changes throughout the year. I'm surprised I have not been able to find a clock like this. It seems simple enough. It would be based on Sidereal time and allow a programmable or analog offset that would account for my location and simply keep time based on Star time.
I just think it would be a neat tool for planning the observing sessions and if for nothing else a unique item. Call me lazy or crazy but I think it would be neat to look at during the day when the stars are not out to see what the Sidereal time is. I'm trying to memorize the constellations and the brightest stars with respect to their location to Sidereal time. Then I'll try to memorize the brightest Deep Space objects. I figure if i can do this, I can have a star map in my head.
I admire you guys who have been doing this for a long time and already have a fairly detailed star map in your head.
I just think it would be a neat tool for planning the observing sessions and if for nothing else a unique item. Call me lazy or crazy but I think it would be neat to look at during the day when the stars are not out to see what the Sidereal time is. I'm trying to memorize the constellations and the brightest stars with respect to their location to Sidereal time. Then I'll try to memorize the brightest Deep Space objects. I figure if i can do this, I can have a star map in my head.
I admire you guys who have been doing this for a long time and already have a fairly detailed star map in your head.
'The only way to make it is to try!'
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
- Bigzmey
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Re: Digital Sidereal Clock
On somewhat related subject. If your scope can do 1-target alignment, you can align it on Moon when the Moon is out during the day, and then observe bright stars (Rigel, Aldebaran, etc.) through telescope during the day.
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Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
- Flyhigh7
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Re: Digital Sidereal Clock
Thanks. That's a good idea however I am not bringing this Telescope out while the sun is up until I get a sun filter. Last time the WiFi hung it wouldn't stop slewing until I found the power OFF button. LOL I just don't trust this system yet. Didn't get to go out yesterday due to clouds with 25mph winds. I hope to do that tonight.
Also,I removed the Focus motor because I don't like having to scroll through a few menus to make focus adjustments. If they ever have dedicated Focus IN and Focus OUT buttons, I'll put it back on. I was able to stay connected to SkyPortal (indoors) while not aligned for 30 minutes without a problem so I'm hoping for some good WiFi performance outdoors if I get some clear skies tonight.
I still like your idea to negotiate the updated WiFi Head.
'The only way to make it is to try!'
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
- AstroBee
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Re: Digital Sidereal Clock
There are very few motorized focusers that are visual friendly. You really only need the motor if you are imaging and not near the scope or don't want to vibrate the system while tuning focuing.
For visual, nothing beats the old manual method.
Greg M.~ "Ad Astra per Aspera"
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Scopes: Celestron EdgeHD14", Explore Scientific ED152CF & ED127 APO's, StellarVue SV70T, Classic Orange-Tube C-8, Lunt 80mm Ha double-stack solar scope.
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- OzEclipse
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Re: Digital Sidereal Clock
These were more common 30-50 years ago, less so now.
A sidereal day is 23 h 56 min 4.0905s
The difference between siderial time and mean solar time is a factor of 1.00273791.
Some old digital watches and clocks 1980's and 90's had a small potentiometer that could be tweaked to change the rate. The idea being you could tweak it to get perfect solar time. But you could also tweak to get sidereal time. Had to be a battery clock. Plug in electrics work off the frequency of the mains.
A simple way to work out approximate sidereal time in your head, which for the purpose you are stating of wanting to know roughly what is overhead should be good enough, is that sidereal time is 0hr at local midnight on Sept 21. Add 2 hrs for every month and 30 mins for every week, 4 mins per day, then add the time of day. If your location is off the time meridian , you need to make a correction of 4 degrees per minute for that eg I live in the +10UT time zone, 150E meridian but I live at 148 degrees so I have to correct (148-150)x4mins= subtract 8 mins. If the total is > 24hrs, subtract 24rs to get back in range.
That rough method will usually get you reasonably close(5-10mins) of true sidereal time
So for example, today Feb 23 at 2:24 pm the sidereal time is
Since September 23(last Autumnal equinox)
5 months x 2 hrs.
+ 0 weeks x 30 mins
+ 0 days x 4mins
10hrs 0m
subtract longitude correction
10:08-00:08=10:00
add Local time 14:24
total 24hrs24m
Sidereal time 00hrs 24m (Calculated from above)
Sidereal time 00hrs 28m (Obtained by precise calculation)
__________________________________________________________________
Today being exactly 5 months was a particularly easy example.
Let's try March 5th at 11:42am
Since September 23(last Autumnal equinox)
5 months x 2 hrs.
+ 1 week x 30 mins
+ 4 days x 4mins
10hrs 46m
subtract longitude correction
10:46-00:08=10:38
add Local time 11:42
total 22hrs 20m
Sidereal time 22hrs 20m (Calculated from above)
Sidereal time 22hrs 29m (Obtained by precise calculation)
There are apps for Android and IOS that will spit out sidereal time. You can set a regular clock off theapp at the start of your session and it will get behind sidereal by just 10s per hr . If daylight savings time in in force, you need to correct for that as well. We have DST here at present and I have invisibly corrected for it so as not to complicate it further.
Joe
A sidereal day is 23 h 56 min 4.0905s
The difference between siderial time and mean solar time is a factor of 1.00273791.
Some old digital watches and clocks 1980's and 90's had a small potentiometer that could be tweaked to change the rate. The idea being you could tweak it to get perfect solar time. But you could also tweak to get sidereal time. Had to be a battery clock. Plug in electrics work off the frequency of the mains.
A simple way to work out approximate sidereal time in your head, which for the purpose you are stating of wanting to know roughly what is overhead should be good enough, is that sidereal time is 0
That rough method will usually get you reasonably close(5-10mins) of true sidereal time
So for example, today Feb 23 at 2:24 pm the sidereal time is
Since September 23(last Autumnal equinox)
5 months x 2 hrs.
+ 0 weeks x 30 mins
+ 0 days x 4mins
10hrs 0m
subtract longitude correction
10:08-00:08=10:00
add Local time 14:24
total 24hrs24m
Sidereal time 00hrs 24m (Calculated from above)
Sidereal time 00hrs 28m (Obtained by precise calculation)
__________________________________________________________________
Today being exactly 5 months was a particularly easy example.
Let's try March 5th at 11:42am
Since September 23(last Autumnal equinox)
5 months x 2 hrs.
+ 1 week x 30 mins
+ 4 days x 4mins
10hrs 46m
subtract longitude correction
10:46-00:08=10:38
add Local time 11:42
total 22hrs 20m
Sidereal time 22hrs 20m (Calculated from above)
Sidereal time 22hrs 29m (Obtained by precise calculation)
There are apps for Android and IOS that will spit out sidereal time. You can set a regular clock off the
Joe
Amateur astronomer since 1978...................Web site : http://joe-cali.com/
Scopes: ATM 18" Dob, Vixen VC200L, ATM 6"f7, Stellarvue 102ED, Saxon ED80, WO M70 ED, Orion 102 Maksutov, ST80.
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Re: Digital Sidereal Clock
I had an old mechanical travel alarm clock that ran 4 minutes fast per day. Rather than fiddle with the adjustment, I labelled it as a sidereal time clock.
Interestingly, because theRA setting circle on my C-90's fork mount is driven by the tracking motor, it has a sidereal time index. So, I can set my alarm clock to sidereal time before I leave the house, then use it to set the RA setting circle on the mount. I can immediately use it for finding objects without having to centre a known star and look up its coordinates of first.
Interestingly, because the
DSO AP: Orion 200mm f/4 Newtonian Astrograph; ATIK 383L+; EFW2 filter wheel; Astrodon Ha,Oiii,LRGB filters; KWIQ/QHY5 guide scope; Planetary AP: Celestron C-11; ZWO ASI120MC; Portable: Celestron C-8 on HEQ5 pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome; iOptron CEM60 (pier); Helena Observatory (H2O) Astrobin
- Flyhigh7
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Re: Digital Sidereal Clock
Thank you all for the very interesting and informative replies!
'The only way to make it is to try!'
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
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Re: Digital Sidereal Clock
If you download the app "Nightshift" (it's free) using the menu you can select the astronomical clock and it has all the info you need. Plus, it is a pretty cool "astro" app .
Here's a link: https://play.google.com/store/apps/deta ... nightshift
Cheers,
Here's a link: https://play.google.com/store/apps/deta ... nightshift
Cheers,
∞ Primary Scopes: #1: Celestron CPC1100 #2: 8" f/7.5 Dob #3: CR150HD f/8 6" frac
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
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Searching the skies since 1966. "I never met a scope I didn't want to keep."
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6R, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100 ∞ AP Gear: ZWO EAF and mini EFW and the Optolong L-eXteme filter
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
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- Flyhigh7
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Re: Digital Sidereal Clock
Thanks JayTee. This looks like an excellent
'The only way to make it is to try!'
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
- OzEclipse
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Re: Digital Sidereal Clock
Apple Store has an
Joe
Amateur astronomer since 1978...................Web site : http://joe-cali.com/
Scopes: ATM 18" Dob, Vixen VC200L, ATM 6"f7, Stellarvue 102ED, Saxon ED80, WO M70 ED, Orion 102 Maksutov, ST80.
Mounts: Takahashi EM-200, iOptron iEQ45, Push dobsonian with Nexus DSC, three homemade EQ's.
Eyepieces: TV Naglers 31, 17, 12, 7; Denkmeier D21 & D14; Pentax XW10, XW5, Unitron 40mm Kellner, Meade Or 25,12
Cameras : Pentax K1, K5, K01, K10D / VIDEO CAMS : TacosBD, Lihmsec.
Cam/guider/controllers: Lacerta MGEN 3, SW Synguider, Simulation Curriculum SkyFi 3+Sky safari
Memberships Astronomical Association of Queensland; RASNZ Occultations Section; Single Exposure Milky Way Facebook Group (Moderator) (12k members), The Sky Searchers (moderator)
- Flyhigh7
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Re: Digital Sidereal Clock
Thanks Joe. I'm currently upgrading my IOS to 15 to get this clock.
'The only way to make it is to try!'
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
- JayTee
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Re: Digital Sidereal Clock
Unfortunately, I just learned that Nightshift for Android is not the same app as Nightshift for iOS. Sorry about that.
∞ Primary Scopes: #1: Celestron CPC1100 #2: 8" f/7.5 Dob #3: CR150HD f/8 6" frac
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6R, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100 ∞ AP Gear: ZWO EAF and mini EFW and the Optolong L-eXteme filter
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
Searching the skies since 1966. "I never met a scope I didn't want to keep."
∞ AP Scopes: #1: TPO 6" f/9 RC #2: ES 102 f/7 APO #3: ES 80mm f/6 APO
∞ G&G Scopes: #1: Meade 102mm f/7.8 #2: Bresser 102mm f/4.5
∞ Guide Scopes: 70 & 80mm fracs -- The El Cheapo Bros.
∞ Mounts: iOptron CEM70AG, SW EQ6R, Celestron AVX, SLT & GT (Alt-Az), Meade DS2000
∞ Cameras: #1: ZWO ASI294MC Pro #2: 662MC #3: 120MC, Canon T3i, Orion SSAG, WYZE Cam3
∞ Binos: 10X50,11X70,15X70, 25X100 ∞ AP Gear: ZWO EAF and mini EFW and the Optolong L-eXteme filter
∞ EPs: ES 2": 21mm 100° & 30mm 82° Pentax XW: 7, 10, 14, & 20mm 70°
Searching the skies since 1966. "I never met a scope I didn't want to keep."
- Flyhigh7
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Re: Digital Sidereal Clock
I had used up all my fast download time so it took 2 days to download the ios upgrade I needed for LST Clock but that is finally done and I have this cool little
'The only way to make it is to try!'
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
- OzEclipse
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Re: Digital Sidereal Clock
Glad that works for you. After that post, I created an excel spreadsheet that worked out LST to within a few minutes accuracy. The mental arithmetic method I described was how I did it back in the 80’s before smart phones and laptop computers.Flyhigh7 wrote: ↑Mon Feb 26, 2024 2:19 pmI had used up all my fast download time so it took 2 days to download the ios upgrade I needed for LST Clock but that is finally done and I have this cool littleapp now. Thanks for the tip Joe. I like that you can have multiple locations (not that I'm ready to start lugging this beast of a telescope around).
Joe
Amateur astronomer since 1978...................Web site : http://joe-cali.com/
Scopes: ATM 18" Dob, Vixen VC200L, ATM 6"f7, Stellarvue 102ED, Saxon ED80, WO M70 ED, Orion 102 Maksutov, ST80.
Mounts: Takahashi EM-200, iOptron iEQ45, Push dobsonian with Nexus DSC, three homemade EQ's.
Eyepieces: TV Naglers 31, 17, 12, 7; Denkmeier D21 & D14; Pentax XW10, XW5, Unitron 40mm Kellner, Meade Or 25,12
Cameras : Pentax K1, K5, K01, K10D / VIDEO CAMS : TacosBD, Lihmsec.
Cam/guider/controllers: Lacerta MGEN 3, SW Synguider, Simulation Curriculum SkyFi 3+Sky safari
Memberships Astronomical Association of Queensland; RASNZ Occultations Section; Single Exposure Milky Way Facebook Group (Moderator) (12k members), The Sky Searchers (moderator)
- Flyhigh7
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Re: Digital Sidereal Clock
Don't ya just love Excel!. I used to use Visual Basic to program Excel to produce my companies' Operations Failure Rate and Expense Tracking reports. VBA for Excel is fun!
'The only way to make it is to try!'
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
- Flyhigh7
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Re: Digital Sidereal Clock
Update on my WiFi problems:
I am very impressed with Celestron Tech support as they have been very responsive to me in a timely manner and they know what they are doing. When you call Celestron support you actually get Technicians that work at and for Celestron instead of some third party company located on the other end of the world. I'm happy to report they are honoring my request to send me a WiFi Module which should have a stronger WiFi radio in it than the one in my mount. I have clouds in my area for the next few days so I won't be hunting stuff soon but I thank you all for your help.
I am very impressed with Celestron Tech support as they have been very responsive to me in a timely manner and they know what they are doing. When you call Celestron support you actually get Technicians that work at and for Celestron instead of some third party company located on the other end of the world. I'm happy to report they are honoring my request to send me a WiFi Module which should have a stronger WiFi radio in it than the one in my mount. I have clouds in my area for the next few days so I won't be hunting stuff soon but I thank you all for your help.
'The only way to make it is to try!'
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
- OzEclipse
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Re: Digital Sidereal Clock
Well, if you love excel, FWIW, here is the excel spreadsheet. It's not fancy, just something I threw together after I answered your first post to see if I could remember how to do it without a reference. You need to enter the date of the previous autumnal equinox.
Cheers
Joe
Amateur astronomer since 1978...................Web site : http://joe-cali.com/
Scopes: ATM 18" Dob, Vixen VC200L, ATM 6"f7, Stellarvue 102ED, Saxon ED80, WO M70 ED, Orion 102 Maksutov, ST80.
Mounts: Takahashi EM-200, iOptron iEQ45, Push dobsonian with Nexus DSC, three homemade EQ's.
Eyepieces: TV Naglers 31, 17, 12, 7; Denkmeier D21 & D14; Pentax XW10, XW5, Unitron 40mm Kellner, Meade Or 25,12
Cameras : Pentax K1, K5, K01, K10D / VIDEO CAMS : TacosBD, Lihmsec.
Cam/guider/controllers: Lacerta MGEN 3, SW Synguider, Simulation Curriculum SkyFi 3+Sky safari
Memberships Astronomical Association of Queensland; RASNZ Occultations Section; Single Exposure Milky Way Facebook Group (Moderator) (12k members), The Sky Searchers (moderator)
- Flyhigh7
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Re: Digital Sidereal Clock
Good job OzEclipse. Nice little spreadsheet. Thanks.
'The only way to make it is to try!'
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
Telescope: Celestron Evolution 9.25 with Celestron Motor Focus
Evolution WiFi Mount Head/ built in 10 Hr Battery and CPC Tripod
Binoculars: Celestron SkyMaster Giant 15x70 / Heavy Duty Tripod
Simmons 10x50
Camera: Canon Digital Rebel XT EOS 350D
Diagonal: Baader 2" BBHS Sitall Mirror
EPs: Baader Hyperion Aspheric 36mm 1.25"/2", Pentax XW 20mm, Pentax XW 7mm,
Tele Vue Delite 11mm, Plossl 40mm & 13mm
Barlow Lens: Tele Vue 2.5x - 1.25" Powermate
Filters: Baader Planetarium Neodymium Moon & Skyglow Filter
- billywjackson
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Re: Digital Sidereal Clock
This doesn't help the IOS people, but there is an app for android called Astro Clock. Gives local. true solar, and sidereal times. Also sun, moo , and planet info.
Clear skies!
Clear skies!
- Graeme1858
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Re: Digital Sidereal Clock
billywjackson wrote: ↑Thu Apr 04, 2024 8:38 pm This doesn't help the IOS people, but there is an app for android called Astro Clock. Gives local. true solar, and sidereal times. Also sun, moo , and planet info.
Clear skies!
Cheers for that.
Graeme
______________________________________________
Celestron 9.25 f10 SCT, f6.3FR, CGX mount.
ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.
https://www.averywayobservatory.co.uk/
Celestron 9.25 f10 SCT, f6.3FR, CGX mount.
ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.
https://www.averywayobservatory.co.uk/
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