Bit of a late session

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davesellars
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Bit of a late session

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Post by davesellars »


Session Report for 12th Jan.

Following last night's astronimical marathon of 7 hours observing I was a little tired but the dob was already out from that session and it's difficult to pass up a clear night! However, at 8pm I could barely make out the constellations with the moon and transparency being awful. So I spent some time attempting to fix the 80ED focuser (can't seem to fix it this time round) which had slipped loose yet again and then typing up session 3 and planning some brighter objects to observe while waiting for the conditions to hopefully improve.

11pm and I was out - the moon was starting to lower a bit and would soon disappear behind rooftop. The transparency was much better but far from brilliant.

7 Iris - Asteriod in Gemini - apparently mag 7.6 it was in slightly tricky place to locate but with the 60mm finder I honed in on a closeby group of mag 9 - 11 stars and pin-pointed the location exactly. However, I can't say that I managed to see this. The location of the asteriod I'd expect to be accurate in Sky Safari but if the asterioid was indeed mag 7.6 I wasn't sure why I couldn't see it as I'd expect the surface brightness not to be much of a factor. I used the Delos 17.3 and 10mm however after about 30 mins I gave up on this. I'll have to give it another go perhaps when the moon is not such a factor.

NGC 2392 Eskimo nebula (Planetary) - Very bright and good relative size using the 10mm Delos the core showed very well with some surrounding nebulosity in perfect circle.

NGC 1857 Open cluster in Auriga - sparse cluster with 4 bright stars within lots of very low magnitude starts just visible with the 10mm Delos.

NGC 1907 Open cluster in Auriga - On the edge direct visibility for the most part but with averted vision able to make out individual mag 11 to 12 stars in the group.

M38 - Open cluster in Auriga - With the 10mm Delos showing an impressive amount of stars with the brighter ones making a cross like structure - can see why it's called the Starfish cluster!

IC 2149 - Planetary nebula in Auriga (mag 10.6) - Very small almost stellar like appearance. Using the 5mm Delos showed not much improvement however its size is only 0.2 arcmins.

I had a quick scan around Leo. The moon-light was too strong tonight to even see the M65 and M66. As it was already now 1:45am I decided to wrap up the session.
SW Flextube 12" Dobsonian.
Starfield ED102 f/7; SW ED80; SW 120ST
EQ5 and AZ4 mounts
Eyepieces: TV Delos 17.3 & 10; Pentax XW 7 & 5; BCO 32,18,10; Fuyiyama Ortho 12.5; Vixen SLV 25.
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turboscrew
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Re: Bit of a late session

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Post by turboscrew »


Nice clusters.
Better luck with 7 Iris next time.
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Re: Bit of a late session

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Post by Lady Fraktor »


A nice session Dave, good that you could get out again.
See Far Sticks: Antares Elita 103/1575, AOM FLT 105/1000, Bresser BV 127/1200, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS100/1000, Vixen SD115s/885
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Re: Bit of a late session

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Post by Bigzmey »


Nice session Dave and I appreciate your interest in asteroids. From my experience Sky Safari is quite accurate in prediction of asteroid position and brightness. If something funky like that happens I go to Settings, Solar System and do update Minor Body Orbit Data.
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.
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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.

Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2382, Comets: 34, Asteroids: 255
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davesellars
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Re: Bit of a late session

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Post by davesellars »


Bigzmey wrote: Fri Jan 14, 2022 12:24 am Nice session Dave and I appreciate your interest in asteroids. From my experience Sky Safari is quite accurate in prediction of asteroid position and brightness. If something funky like that happens I go to Settings, Solar System and do update Minor Body Orbit Data.
Many thanks! I didn't realise that feature was in Sky Safari... I just checked and the last update was 11th Jan 2022. Now updated and going back to last night the asteroid was in a slightly different position - enough to ensure I wasn't looking in the correct place at least! :p Oh well, next time I'll know better to update before starting the session!
SW Flextube 12" Dobsonian.
Starfield ED102 f/7; SW ED80; SW 120ST
EQ5 and AZ4 mounts
Eyepieces: TV Delos 17.3 & 10; Pentax XW 7 & 5; BCO 32,18,10; Fuyiyama Ortho 12.5; Vixen SLV 25.
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Makuser United States of America
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Re: Bit of a late session

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Post by Makuser »


Hi Dave. A nice observing session with many nice open clusters and two planetary nebulae. Thanks for sharing this report with us Dave and hope that you grab asteroid 7 Iris the next time out.
Marshall
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Celestron Omni XLT150R f/5 Refractor on CG4 mount with dual axis drives.
Orion 180mm f/15 Maksutov-Cassegrain on CG5-GT Goto mount.
Orion XT12i 12" f/4.9 Dobsonian Intelliscope.
Kamakura 7x35 Binoculars and Celestron SkyMaster 15x70 Binoculars. ZWO ASI 120MC camera.
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