Sterrenland Posted February 27, 2022 Share Posted February 27, 2022 Second time out this week...unheard of! I thought I'd try M51 again. Haven't imaged this one for a while. Despite the seeing being fairly good last night, the wind picked up and it turned quite gusty. Despite this I probably got my best M51 to date. I only managed about 1.5 hours before I called it a night as I was starting to lose some shots due to the wind. Still amazed seeing these wonders with only an 80mm scope! 4 Quote Link to comment Share on other sites More sharing options...
Dave_S Posted February 27, 2022 Share Posted February 27, 2022 Very nice 👍 I couldn't get that result from 2 hours with a 294c, Pro Tec, 115mm APO + 0.8x reducer (f/5.6 644mm FL). M51 occupied a very small a part of the frame, and not enough resolution to allow for a 'crop'. Maybe my Altair 294c is below par, when it comes to sensitivity. I certainly find that it doesn't compare with the SXVR H16 that I used back in the day (pre 2014) 1 Quote Link to comment Share on other sites More sharing options...
Sterrenland Posted February 27, 2022 Author Share Posted February 27, 2022 4 minutes ago, Dave_S said: Very nice 👍 I couldn't get that result from 2 hours with a 294c, Pro Tec, 115mm APO + 0.8x reducer (f/5.6 644mm FL). M51 occupied a very small a part of the frame, and not enough resolution to allow for a 'crop'. Maybe my Altair 294c is below par, when it comes to sensitivity. I certainly find that it doesn't compare with the SXVR H16 that I used back in the day (pre 2014) Thanks...this is quite a severe crop...blowing it up this large does start to degrade the quality, but there's just enough detail still there to make it bearable I think. In the original shot M51 is rather small...I keep edging towards getting a larger scope! Quote Link to comment Share on other sites More sharing options...
Dave_S Posted February 27, 2022 Share Posted February 27, 2022 53 minutes ago, Sterrenland said: Thanks...this is quite a severe crop...blowing it up this large does start to degrade the quality, but there's just enough detail still there to make it bearable I think. In the original shot M51 is rather small...I keep edging towards getting a larger scope! As astro is now very much a secondary interest to my photography, I'll not be heading back to the big scopes that I had back in the day, when I had 8", 10" and 12" SCTs, which I complimented with a 110mm APO refractor.. You can't beat a large aperture for light grab, and I could do things with those SCTs that I can't do with this 115mm refractor. 1 Quote Link to comment Share on other sites More sharing options...
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