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Love the diffracts on the stars!timmdeeg said:I had the chance to stay a good week at the Astrofarm Kiripotib in Namibia - what a breathtaking Milkyway!
Fortunately it was possible to rent a mount which I was familiar with, otherwise it wouldn't have made sense.
Without filter except Helix Nebula, SQM ~ 21,6 each night.
Lacerta 200 Fotonewton on Skywatcher EQ6-R Pro
Sony A7III unmodified
Auto guiding with StarAid Revolution B
DeepSkyStacker - Siril - LightZone
M20 M8 - 09/13/2023 - 4x300s ISO 400 - 7x300s ISO 6400
View attachment 333232
NGC 253, the Sculptor-Galaxy is a starburst galaxy 11 MLj away, a crop - 09/13/2023 - 15x300s ISO 400
View attachment 333233
M16 a crop, the pillars of creation - 09/14/2023 - 28x300s ISO 400 - 9x300s ISO 1600
View attachment 333234
NGC 1365 accompanied by galaxies farther away - 09/17/2023 - 27x300s ISO 800
View attachment 333235
NGC 1365 is a double-barred spiral galaxy about 56 MLj away from us, a crop.
View attachment 333236
NGC 4744, the Pavo-Galaxy, about 30 MLj away - 09/13/2023 - 24x300s ISO 400
View attachment 333237
NGC 7293, the Helix-Nebula, a crop - 09/17/2023 - 24x300s ISO 800 - Filter Optolong L-eXtreme
View attachment 333238
Wow, what an amazing shot with the moon!collinsmark said:Figure 1: Jupiter and its moon Europa, 2023 Nov. 02, 8:46.7 UT.
collinsmark said:Meade 10" LX200-ACF
TeleVue 2x PowerMate
DennisN said:Wow, what an amazing shot with the moon!
From the color I would have guessed it was Io.
You got a better resolution of that moon than I got of Mars (using my old equipment).
Though I haven't tried shooting Mars yet with my Sky-Watcher Capricorn 900mm.
DennisN said:Internet says your telescope has the focal length 2500 mm so with the TeleVue 2x Powermate you get an equivalent focal length of 2 x 2500 = 5000 mm, is that correct?
That is a serious focal length!
Have you tried shooting some non-astro thing at day with that setup just for fun, I wonder?
(I wonder what the minimum focus distance would be... pretty long I suppose. )
Birdscollinsmark said:The thought of using that scope for terrestrial photography has crossed my mind, but I can't think of situation that would be worth hauling the thing around. Portability is not its strong suit.
… or the Eagle Nebula.Devin-M said:Birds
collinsmark said:It's Jupiter time again!
Jupiter is at opposition this week, so anytime around now would be a great time to observe it.
We've been having some pretty lousy seeing conditions in San Diego all this last week, and this is best I've been able to get. It's not for lack of trying. So, yes, it's a little blurry. I've tried to sharpen it up, but I can only do so much.
I completely understand.collinsmark said:The thought of using that scope for terrestrial photography has crossed my mind, but I can't think of situation that would be worth hauling the thing around. Portability is not its strong suit.
Definitely a lens abberration. Looks like a bit of a ghost reflection and some coma?neilparker62 said:
I think so too.chemisttree said:Definitely a lens abberration. Looks like a bit of a ghost reflection and some coma?
Ok thanks - will try again another day. Did not get anything like that in a previous pic (following). Nor with other bright stars such as Rigel and Betelgeuse in Orion.chemisttree said:Definitely a lens abberration. Looks like a bit of a ghost reflection and some coma?
Sirius at zenith 20231110 031532 - right in the centre of the view field. Looks quite 'normal' which confirms what you say.chemisttree said:Coma is worse the nearer the edge you go. If you place the bright star near the center of the field, you should see coma become less of a problem.
I think the coma is for the ghost itself? I don’t believe ghost images are corrected in lens designs. Those are usually controlled by antireflection coatings. Could also be due to one or more dirty or fogged lenses in the optical train. Bright stars against a black background is the most severe test of optics.
You are obviously using a high quality lens. That minor abberation was not too significant.neilparker62 said:Sirius at zenith 20231110 031532 - right in the centre of the view field. Looks quite 'normal' which confirms what you say.
View attachment 335104
Well worth viewing!collinsmark said:(PF won't embed the animated gif, but here's a link to it:)
http://www.shadycrypt.com/PF/BeautifulUniverse/Jup_2023_11_05_SmallForPF.gif
Figure 2: Jupiter with Io transit from 05:26 to 07:32, 2023-11-05 UT
Very, very cool!collinsmark said:(PF won't embed the animated gif, but here's a link to it:)
http://www.shadycrypt.com/PF/BeautifulUniverse/Jup_2023_11_05_SmallForPF.gif
Figure 2: Jupiter with Io transit from 05:26 to 07:32, 2023-11-05 UT
Canon EOS 600D DSLR camera.chemisttree said:You are obviously using a high quality lens. That minor abberation was not too significant.
Beautiful.collinsmark said:captured from my back patio
Bortle class 7 (maybe 8 ) skies - unbelievable that you obtain such an image!? Congratulations!collinsmark said:View attachment 336918Bortle class 7 (maybe 8 ) skies