DSO 遺照集 -- NGC7000
Re: DSO 遺照集 -- M42 reprocessed
M42 reprocessed
Taken with FL55SS + HD flattener + LPS + 100Da @PTC in 2018 @315mm F5.7
20x120s @iso1600, autoguided with Vixen AP mount
Stacked and processed in PI, calibrated with darks and bias only
Final touch in PS
Taken with FL55SS + HD flattener + LPS + 100Da @PTC in 2018 @315mm F5.7
20x120s @iso1600, autoguided with Vixen AP mount
Stacked and processed in PI, calibrated with darks and bias only
Final touch in PS
Re: DSO 遺照集 -- M33
142. M33
Taken with Vixen VSD100F3.8 + 40Da in China in 2014 @380mm F3.8
12x300s @iso1600, autoguided with Vixen GP2 photoguider in RA direction only
Reprocessed in PI and PS
Taken with Vixen VSD100F3.8 + 40Da in China in 2014 @380mm F3.8
12x300s @iso1600, autoguided with Vixen GP2 photoguider in RA direction only
Reprocessed in PI and PS
Re: DSO 遺照集 -- HDR vs no HDR
143. HDR vs no HDR
Taken with Vixen VSD100F3.8 astrograph + LPS + 40Da in TMS in 2014 @380mm F3.8
Autoguiding with Vixen GP2 photoguider in RA direction only
Stacked in PI, no flat, no bias
Processed in PI and PS
Which one do you like a bit more?
No HDR version:
16x180s @iso400
HDR version:
Blending of shorter exposure of 8x20s @iso400 in PS
Taken with Vixen VSD100F3.8 astrograph + LPS + 40Da in TMS in 2014 @380mm F3.8
Autoguiding with Vixen GP2 photoguider in RA direction only
Stacked in PI, no flat, no bias
Processed in PI and PS
Which one do you like a bit more?
No HDR version:
16x180s @iso400
HDR version:
Blending of shorter exposure of 8x20s @iso400 in PS
Re: DSO 遺照集 -- M33
144. M33
Went out to Sai Kung for imaging M33 last night but the weather didn't cooperate with. This image is a combination of L channel taken last night and color data taken with "Vixen VSD100F3.8 astrograph + 40Da" in China in 2014.
L Channel
Vixen SD115S + HD reducer kit + 1600MM @700mm F6.1
31x120s, autoguided with SXD2 mount
Stacked in DSS, no dark, no flat
Went out to Sai Kung for imaging M33 last night but the weather didn't cooperate with. This image is a combination of L channel taken last night and color data taken with "Vixen VSD100F3.8 astrograph + 40Da" in China in 2014.
L Channel
Vixen SD115S + HD reducer kit + 1600MM @700mm F6.1
31x120s, autoguided with SXD2 mount
Stacked in DSS, no dark, no flat
Re: DSO 遺照集 -- Reprocessed M33
Re-stacked in DSS with dark, bias and flat calibrated and then processed in PI and PS. Seemed the improvement just very little.
Re: DSO 遺照集 -- SD115S vs SD103S
SD115S vs SD103S
Image labelled with SD115S is a result of combining the L channel (taken with SD115S apo + 1600MM) and the RGB images (labelled with SD103S, taken with SD103S apo + 1600MM).
Seemed not much gain in resolution as the objective of SD115S apo just has an aperture 15mm larger than that of SD103S. If it is not mentioned, maybe you cannot distinguish between them.
Larger images:
1. SD115S 2. SD103S
Image labelled with SD115S is a result of combining the L channel (taken with SD115S apo + 1600MM) and the RGB images (labelled with SD103S, taken with SD103S apo + 1600MM).
Seemed not much gain in resolution as the objective of SD115S apo just has an aperture 15mm larger than that of SD103S. If it is not mentioned, maybe you cannot distinguish between them.
Larger images:
1. SD115S 2. SD103S
Re: DSO 遺照集 -- M33 (final version)
Final version of M33 reprocessed
A combination of L channel data taken with "SD115S apo + 1600MM" and color data taken with "VSD astrograph + 40Da" .
A combination of L channel data taken with "SD115S apo + 1600MM" and color data taken with "VSD astrograph + 40Da" .
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