Darks, the Moon, and raccoons
- Thefatkitty
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Darks, the Moon, and raccoons
I hope you've all had a good weekend. Mine extends into tomorrow; something here in Ontario called Simcoe day. Of course, the clouds know this
I went out about 9:15 tonight as it was finally cooling off. In the west it was pretty clear and I could see the Moon setting. Ah, why not...
I went and got an 80mm and my Canon T3. Though it wasn't totally dark yet and the Moon was only 15* above the horizon, I took 36 shots at ISO 800 and 1/80 to 1/125 sec. exp. At the end of this, as I was putting on the dewshield cover, I thought "maybe I should take some darks, I wonder if they would make a difference, even just on the Moon?". I took six. Why six? I have no idea how many you're supposed to do, and it seemed an appropriate number... My next thought was what exactly you were supposed to do with them in what program? I use PIPP to crop, AS2 for stacking, and either RegiStax for color output or ImPPG for monochrome output. This should be amusing...
Downstairs I go, unload the files from the camera, and open them in PIPP. Well, that was easy! Right next to the image files tab is a dark files tab. So I add my dark files. Of course, now I'm looking at the flat files tab. I forget what those are, I'll have to look it up. The flat dark files tab sounds like a difficult combination of the previous two... Well, I'll just pretend I didn't notice them and click the Do Processing tab
Process it does. I usually set the output files to have the image quality percentage displayed, based on image brightness. Just for fun, I do the exact same processing in PIPP, but this time without the darks. I then compare the two output directories. The quality of the files with the darks was consistently higher. Not by a lot; between .08% to .36% at most, but I figure every little bit helps. Neat trick, that, I never knew or even thought of it before.
I process both directories, and immediately notice the final output of the two in AS2 is significantly different. The one with the darks has a blacker background, not as much "glow" on the lit side of the Moon; as in it's blacker closer to the edge of the disc, and no trailing artifacts or such on the unlit side. Even the terminator line was a touch more detailed.
Now I have to look into all this stuff with darks and flats and what have you This also might not end well. Dark files will take me to the dark side, I fear. I must resist..... :Stop:
And this is the result. The first one was run through RegiStax to keep the color, and the second is from ImPPG:
After that bit of revalation, I went back outside to see if it was clear. In my hour inside, it had yucked up considerably. So much for that. As I was feeling sorry for myself, I heard a scraping coming from up the neighbours tree. The local raccoons were awake it would seem. This may provide some amusement
Went back in, got the camera, put the lens back on, and back out I went. By this time, the two furballs were sitting on my fence. I went out the door a few feet and they didn't seem to notice or care.
For the remainder of this, these two foragers of the urban garbage can will be known as Lefty and Righty
Lefty seems to be waiting for Righty, who has a very brown tail, to finish the cleaning process.
I took a few steps closer, Righty got up to leave, probably thanks to me.
I think Lefty had just bumped into a part of Righty, as Lefty almost looks sheepish and Righty has a look of What just happened?
Whatever happened, it wasn't good, and Lefty got to hear about it.
Then, forgetting I was there, Righty sat down to clean again. I stepped closer, but I also stepped onto a branch which snapped.
After that they hustled off pretty quick. I'm sure the flash didn't help either!
I actually told my daughter the other day that teenagers (as in you, kiddo) are somewhat like raccoons. Yup, they sleep all day, are up all night, and eat anything and everything. I love the looks she gives me...
And that's my night. It's 1:15AM here, perhaps I should think about sleep. I am neither a teenager nor a raccoon
Hopefully your night is/was clear, and all the best,
I went out about 9:15 tonight as it was finally cooling off. In the west it was pretty clear and I could see the Moon setting. Ah, why not...
I went and got an 80mm and my Canon T3. Though it wasn't totally dark yet and the Moon was only 15* above the horizon, I took 36 shots at ISO 800 and 1/80 to 1/125 sec. exp. At the end of this, as I was putting on the dewshield cover, I thought "maybe I should take some darks, I wonder if they would make a difference, even just on the Moon?". I took six. Why six? I have no idea how many you're supposed to do, and it seemed an appropriate number... My next thought was what exactly you were supposed to do with them in what program? I use PIPP to crop, AS2 for stacking, and either RegiStax for color output or ImPPG for monochrome output. This should be amusing...
Downstairs I go, unload the files from the camera, and open them in PIPP. Well, that was easy! Right next to the image files tab is a dark files tab. So I add my dark files. Of course, now I'm looking at the flat files tab. I forget what those are, I'll have to look it up. The flat dark files tab sounds like a difficult combination of the previous two... Well, I'll just pretend I didn't notice them and click the Do Processing tab
Process it does. I usually set the output files to have the image quality percentage displayed, based on image brightness. Just for fun, I do the exact same processing in PIPP, but this time without the darks. I then compare the two output directories. The quality of the files with the darks was consistently higher. Not by a lot; between .08% to .36% at most, but I figure every little bit helps. Neat trick, that, I never knew or even thought of it before.
I process both directories, and immediately notice the final output of the two in AS2 is significantly different. The one with the darks has a blacker background, not as much "glow" on the lit side of the Moon; as in it's blacker closer to the edge of the disc, and no trailing artifacts or such on the unlit side. Even the terminator line was a touch more detailed.
Now I have to look into all this stuff with darks and flats and what have you This also might not end well. Dark files will take me to the dark side, I fear. I must resist..... :Stop:
And this is the result. The first one was run through RegiStax to keep the color, and the second is from ImPPG:
After that bit of revalation, I went back outside to see if it was clear. In my hour inside, it had yucked up considerably. So much for that. As I was feeling sorry for myself, I heard a scraping coming from up the neighbours tree. The local raccoons were awake it would seem. This may provide some amusement
Went back in, got the camera, put the lens back on, and back out I went. By this time, the two furballs were sitting on my fence. I went out the door a few feet and they didn't seem to notice or care.
For the remainder of this, these two foragers of the urban garbage can will be known as Lefty and Righty
Lefty seems to be waiting for Righty, who has a very brown tail, to finish the cleaning process.
I took a few steps closer, Righty got up to leave, probably thanks to me.
I think Lefty had just bumped into a part of Righty, as Lefty almost looks sheepish and Righty has a look of What just happened?
Whatever happened, it wasn't good, and Lefty got to hear about it.
Then, forgetting I was there, Righty sat down to clean again. I stepped closer, but I also stepped onto a branch which snapped.
After that they hustled off pretty quick. I'm sure the flash didn't help either!
I actually told my daughter the other day that teenagers (as in you, kiddo) are somewhat like raccoons. Yup, they sleep all day, are up all night, and eat anything and everything. I love the looks she gives me...
And that's my night. It's 1:15AM here, perhaps I should think about sleep. I am neither a teenager nor a raccoon
Hopefully your night is/was clear, and all the best,
Mark
"The Hankmeister" Celestron 8SE, orange tube Vixen made C80, CG4, AZ-EQ5 and SolarQuest mounts.
Too much Towa glass/mirrors.
Solar:
H/A - PST stage 2 mod with a Baader 90mm ERF on a Celestron XLT 102 (thanks Mike!)
Ca-K - W/O 61mm, Antares 1.6 barlow, Baader 3.8 OD and Ca-K filters with a ZWO ASI174mm.
W/L - C80-HD with Baader 5.0 & 3.8 Solar film, Solar Continuum 7.5nm and UV/IR filters with a Canon EOS 550D.
Member of the RASC
"The Hankmeister" Celestron 8SE, orange tube Vixen made C80, CG4, AZ-EQ5 and SolarQuest mounts.
Too much Towa glass/mirrors.
Solar:
H/A - PST stage 2 mod with a Baader 90mm ERF on a Celestron XLT 102 (thanks Mike!)
Ca-K - W/O 61mm, Antares 1.6 barlow, Baader 3.8 OD and Ca-K filters with a ZWO ASI174mm.
W/L - C80-HD with Baader 5.0 & 3.8 Solar film, Solar Continuum 7.5nm and UV/IR filters with a Canon EOS 550D.
Member of the RASC
- Don Quixote
- Articles: 0
Re: Darks, the Moon, and raccoons
A wonderful excursion, Mark.
Beautiful lunar images and fun coons. At my dark site there are coons, cayotes, and deer by the dozen. I have to be careful driving out there.
Thank you for a great report of your evening !
Beautiful lunar images and fun coons. At my dark site there are coons, cayotes, and deer by the dozen. I have to be careful driving out there.
Thank you for a great report of your evening !
- Juno16
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Re: Darks, the Moon, and raccoons
Hi Mark!
Glad that you got a small chance to get out and have some fun with the scope and camera snapping shots of our lunar neighbor and the neighborhood foragers.
I like the cool feel of the second image.
You obviously are an “outside guy” and love all that goes with it.
It’s booming and raining here. Not an “outside “ kind of morning.
I’m hoping for a clear night during the dark of the moon so that I can try out an automaticmeridian flip with Astrophotography Tool. I failed on my last try, but I think that I got it figout. Helps to read the User Guide!
Take care my friend and thanks for the fine photos!
Jim
Glad that you got a small chance to get out and have some fun with the scope and camera snapping shots of our lunar neighbor and the neighborhood foragers.
I like the cool feel of the second image.
You obviously are an “outside guy” and love all that goes with it.
It’s booming and raining here. Not an “outside “ kind of morning.
I’m hoping for a clear night during the dark of the moon so that I can try out an automatic
Take care my friend and thanks for the fine photos!
Jim
Jim
Scopes: Explore Scientific ED102 APO, Sharpstar 61 EDPH II APO, Samyang 135 F2 (still on the Nikon).
Mount: Skywatcher HEQ5 Pro with Rowan Belt Mod
Stuff: ASI EAF Focus Motor (x2), ZWO OAG, ZWO 30 mm Guide Scope, ASI 220mm min, ASI 120mm mini, Stellarview 0.8 FR/FF, Sharpstar 0.8 FR/FF, Mele Overloock 3C.
Camera/Filters/Software: ASI 533 mc pro, ASI 120mm mini, ASI 220mm mini , IDAS LPS D-1, Optolong L-Enhance, ZWO UV/IR Cut, N.I.N.A., Green Swamp Server, PHD2, Adobe Photoshop CC, Pixinsight.
Dog and best bud: Jack
Sky: Bortle 6-7
My Astrobin: https://www.astrobin.com/users/Juno16/
Scopes: Explore Scientific ED102 APO, Sharpstar 61 EDPH II APO, Samyang 135 F2 (still on the Nikon).
Mount: Skywatcher HEQ5 Pro with Rowan Belt Mod
Stuff: ASI EAF Focus Motor (x2), ZWO OAG, ZWO 30 mm Guide Scope, ASI 220mm min, ASI 120mm mini, Stellarview 0.8 FR/FF, Sharpstar 0.8 FR/FF, Mele Overloock 3C.
Camera/Filters/Software: ASI 533 mc pro, ASI 120mm mini, ASI 220mm mini , IDAS LPS D-1, Optolong L-Enhance, ZWO UV/IR Cut, N.I.N.A., Green Swamp Server, PHD2, Adobe Photoshop CC, Pixinsight.
Dog and best bud: Jack
Sky: Bortle 6-7
My Astrobin: https://www.astrobin.com/users/Juno16/
- Bigzmey
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Re: Darks, the Moon, and raccoons
Fun session and nice shots Mark!
Scopes: Stellarvue: SV102ED; Celestron: 9.25" EdgeHD, 8" SCT, 150ST, Onyx 80ED; iOptron: Hankmeister 6" Mak; SW: 7" Mak; Meade: 80ST.
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
Mounts: SW: SkyTee2, AzGTi; iOptron: AZMP; ES: Twilight I; Bresser: EXOS2; UA: MicroStar.
Binos: APM: 100-90 APO; Canon: IS 15x50; Orion: Binoviewer, LG II 15x70, WV 10x50, Nikon: AE 16x50, 10x50, 8x40.
EPs: Pentax: XWs & XFs; TeleVue: Delites, Panoptic & Plossls; ES: 68, 62; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV.
Diagonals: Baader: BBHS mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric; AltairAstro: 2" prism.
Filters: Lumicon: DeepSky, UHC, OIII, H-beta; Baader: Moon & SkyGlow, Contrast Booster, UHC-S, 6-color set; Astronomik: UHC.
Solar: HA: Lunt 50mm single stack, W/L: Meade Herschel wedge.
Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
- bladekeeper
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Re: Darks, the Moon, and raccoons
That’s pretty awesome, Mark!
Yeah, buddy, if you are making darks, possibly soon some flats, yet, now all you need to do is point at aDSO and get to tracking with some 1 minute exposures...
And then you find yourself guiding, and then bias frames, and then dark flats, DeepSkyStacker, and you have no hair left...
Love the raccoon shots!
I’m off to tell my soon to be 18 year old that he is a raccoon...
Yeah, buddy, if you are making darks, possibly soon some flats, yet, now all you need to do is point at a
And then you find yourself guiding, and then bias frames, and then dark flats, DeepSkyStacker, and you have no hair left...
Love the raccoon shots!
I’m off to tell my soon to be 18 year old that he is a raccoon...
Bryan
Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; Stellarvue SV102T f/7; iOptron MC90 f/13.3; Orion ST80A f/5; ES ED80 f/6; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
Mounts: Celestron AVX; Bresser EXOS-2; ES Twilight I; ES Twilight II; iOptron Cube-G; AZ3/wood tripod; Vixen Polaris
Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett Gemini 12×60 LW, Gordon 10×50, Apogee 20×100
Scopes: Apertura AD12 f/5; Celestron C6-R f/8; ES AR127 f/6.4; Stellarvue SV102T f/7; iOptron MC90 f/13.3; Orion ST80A f/5; ES ED80 f/6; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Unitron Model 142 f/16; Meade NG60 f/10
Mounts: Celestron AVX; Bresser EXOS-2; ES Twilight I; ES Twilight II; iOptron Cube-G; AZ3/wood tripod; Vixen Polaris
Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett Gemini 12×60 LW, Gordon 10×50, Apogee 20×100
- Lady Fraktor
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Re: Darks, the Moon, and raccoons
Lovely lunar images as well as the raccoons Mark
Gabrielle
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1011110)
The only culture I have is from yogurt
- helicon
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Re: Darks, the Moon, and raccoons
Great images of the moon Mark and you encountered a couple of budding raccoon amateur astronomer sidekicks, too!
-Michael
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
Refractors: ES AR152 f/6.5 Achromat on Twilight II, Celestron 102mm XLT f/9.8 on Celestron Heavy Duty Alt Az mount, KOWA 90mm spotting scope
Binoculars: Celestron SkyMaster 15x70, Bushnell 10x50
Eyepieces: Various, GSO Superview, 9mm Plossl, Celestron 25mm Plossl
Camera: ZWO ASI 120
Naked Eye: Two Eyeballs
Latitude: 48.7229° N
- KingNothing13
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Re: Darks, the Moon, and raccoons
Nice moon images, Mark.
And nice images of the raccoons too - they seem non-plussed. It's great.
And nice images of the raccoons too - they seem non-plussed. It's great.
-- Brett
Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
Brett's Carbon Star Hunt
Scope: Apertura AD10 with Nexus II with 8192/716000 Step Encoders
EPs: ES 82* 18mm, 11mm, 6.7mm; GSO 30mm
Celestron SkyMaster 15x70 Binoculars
List Counts: Messier: 75; Herschel 400: 30; Caldwell: 12; AL Carbon Star List: 16
Brett's Carbon Star Hunt
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