DSO 遺照集 -- NGC7000
Re: DSO 遺照集 -- M42 in Ha channel from YL
31. M31 with 6" F4 newtonian
A rush test on the Newtonian to see how fast it would be for deep sky imaging in PTC N years ago when the assembly of this scope was completed, and so no doing a serious collimation on the optical axis.
10x240s @iso1600 with 6" F4 newtonian + MPCC + 40Da, autoguided with SX2 mount
Only darks calibrated in DSS
A rush test on the Newtonian to see how fast it would be for deep sky imaging in PTC N years ago when the assembly of this scope was completed, and so no doing a serious collimation on the optical axis.
10x240s @iso1600 with 6" F4 newtonian + MPCC + 40Da, autoguided with SX2 mount
Only darks calibrated in DSS
最後由 LT 於 週四 19 3月, 2020 23:30 編輯,總共編輯了 1 次。
Re: DSO 遺照集 -- M42 with ED70SS from TMS
32. M42 with ED70SS
Taken with Vixen ED70SS + flattener + LPS + 300Da @TMS in 2011 @392mm F5.6
24x210s @iso400, autoguided
Maybe one of the best shot of M42 from TMS. However, it is seemed a little bit of extra stress on the objective.
Taken with Vixen ED70SS + flattener + LPS + 300Da @TMS in 2011 @392mm F5.6
24x210s @iso400, autoguided
Maybe one of the best shot of M42 from TMS. However, it is seemed a little bit of extra stress on the objective.
最後由 LT 於 週四 19 3月, 2020 23:30 編輯,總共編輯了 1 次。
Re: DSO 遺照集 -- M42 with ED70SS from PTC
33. M42 with ED70SS from PTC
Taken in 2010 with same setup as Image 31 but at PTC. Due to less light pollution than that in TMS, a little bit more detail was captured.
15x300s @iso800
Taken in 2010 with same setup as Image 31 but at PTC. Due to less light pollution than that in TMS, a little bit more detail was captured.
15x300s @iso800
最後由 LT 於 週四 19 3月, 2020 23:30 編輯,總共編輯了 1 次。
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Re: DSO 遺照集 -- M45 with ED70SS from TMS
34. M45 with ED70SS from TMS
Taken with Vixen ED70SS + flattener + LPS + 300Da @TMS in 2011 @400mm F5.7
9x180s @iso800, autoguided
No dark, flat and bias calibrated in DSS
Taken with Vixen ED70SS + flattener + LPS + 300Da @TMS in 2011 @400mm F5.7
9x180s @iso800, autoguided
No dark, flat and bias calibrated in DSS
最後由 LT 於 週四 19 3月, 2020 23:30 編輯,總共編輯了 1 次。
Re: DSO 遺照集 -- M45 with ED70SS from PTC
35. M45 with ED70SS from PTC
Same setup as image #33 but taken @PTC. Due to less light pollution than that @TMS, sn ratio is a little bit better and a little bit more of nebulosity could be captured.
15x240s @iso800 taken in 2010.
Same setup as image #33 but taken @PTC. Due to less light pollution than that @TMS, sn ratio is a little bit better and a little bit more of nebulosity could be captured.
15x240s @iso800 taken in 2010.
最後由 LT 於 週四 19 3月, 2020 23:30 編輯,總共編輯了 1 次。
Re: DSO 遺照集 -- Stacked image of M45 from TMS and PTC
A stack of Image #33 and #34
9x180s + 15x240s @iso800 with ED70SS + flattener + LPS + 300Da
No gain on details but seemed the noise level was improved a little bit.
9x180s + 15x240s @iso800 with ED70SS + flattener + LPS + 300Da
No gain on details but seemed the noise level was improved a little bit.
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