Andy R Posted August 11, 2021 Share Posted August 11, 2021 First DSO target posted for a while 45 mins Ha x 3min 96 mins O3 x 3 mins Sharpstar 94 with 0.8 reducer ASI1600mm Its cropped a little but looking at the stars in the corners I still need to add a bit of spacing. 14 Link to comment Share on other sites More sharing options...
tooth_dr Posted August 11, 2021 Share Posted August 11, 2021 Thats a lovely example. Interested to see how you get on with the stars. Mine had astigmatism that couldnt be resolved 1 Link to comment Share on other sites More sharing options...
Andy R Posted August 11, 2021 Author Share Posted August 11, 2021 41 minutes ago, tooth_dr said: Thats a lovely example. Interested to see how you get on with the stars. Mine had astigmatism that couldnt be resolved Lol Yes I do suffer from star anxiety with it, I’m hoping it’s the back focus. So far I’m not too happy with the scope. I bought the starsharp dedicated field flattener with a recommendation of 100+mm back focus and at that length I can only focus on objects 20yards away. I reduced the back focus and managed to reach focus but the stars are a bit ovate around the edges. This image, I used the .8 reducer. Unfortunately I purchased the scope Dec/Jan time and didn’t get it out the box for 6 months to test due to the weather, otherwise I would be putting it back in the box and returning it. Link to comment Share on other sites More sharing options...
tooth_dr Posted August 11, 2021 Share Posted August 11, 2021 17 minutes ago, Andy R said: Lol Yes I do suffer from star anxiety with it, I’m hoping it’s the back focus. So far I’m not too happy with the scope. I bought the starsharp dedicated field flattener with a recommendation of 100+mm back focus and at that length I can only focus on objects 20yards away. I reduced the back focus and managed to reach focus but the stars are a bit ovate around the edges. This image, I used the .8 reducer. Unfortunately I purchased the scope Dec/Jan time and didn’t get it out the box for 6 months to test due to the weather, otherwise I would be putting it back in the box and returning it. Thats a shame, but I dont think the stars at all detract from your image, it's fantastic and eye catching. I also bought the 94 0.8x FF, and was told the level of astigmatism etc was to be expect with the design of the scope and flattener, and that I will need to use post-processing to correct the star shapes. Link to comment Share on other sites More sharing options...
Lee_P Posted August 11, 2021 Share Posted August 11, 2021 Nice pic, looks suitably ethereal! 1 Link to comment Share on other sites More sharing options...
Andy R Posted August 11, 2021 Author Share Posted August 11, 2021 19 minutes ago, tooth_dr said: Thats a shame, but I dont think the stars at all detract from your image, it's fantastic and eye catching. I also bought the 94 0.8x FF, and was told the level of astigmatism etc was to be expect with the design of the scope and flattener, and that I will need to use post-processing to correct the star shapes. Thanks Adam, You’re right I can live with it and with a bit of processing it has come out alright. I’ll just add a few more hours of Ha to it. Link to comment Share on other sites More sharing options...
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