DSO 遺照集 -- NGC7000

[LT]

157. Running chicken

Taken with Vixen ED81SII apo + HD reducer kit + 1600MM in NZ in 2018 @495mm F6.1
R=G=B=6x480s, autoguided with Vixen AP mount
Bias and dark calibrated in PI
Processed in PI and PS
Very strong wind during imaging

FB_RGB.jpg (1.02 MiB) 已瀏覽 1664 次

[Eddy So]

[anyone]

[littleming]

[LT]

158. Reprocessed galactic center

Taken with EF35mm F2 lens + 100Da in Lantau Island in Hong Kong @F4
5x240s @iso400, with dark, bias and flat calibrated in PI
Unguided with Vixen Polarie star tracker
Re-processed in PI and PS

FB_core_PS.jpg (1.1 MiB) 已瀏覽 1484 次

[littleming]

[LT]

Reprocessed the above image once more with less contrast adjustment.

FB_core_PS_2.jpg (1.43 MiB) 已瀏覽 1476 次

[Eddy So]

[LT]

159. SN 2023ixf in M101

Just a record on it.
Taken with Vixen SD115S apo + SD flattener + 1600MM in Yuen Long in HK tonight @908mm F7.9
L=46x30s @sensor temperature of 0C, with dark calibrated in DSS only
Autoguided with Vixen SXD2 mount
Processed in PI
First-quarter moon high over in the sky
Transparency = 6
Scattered cloud

FB_M101_20230527_YL.jpg (542.19 KiB) 已瀏覽 1352 次

[LT]

Re-stacked and reprocessed in PI with bias, dark and flat calibrated.

Improved a little bit or not?

FB_Crop_DBE_PS.jpg (372.93 KiB) 已瀏覽 1343 次

[Eddy So]

[LT]

160. Reprocessed RHO

Taken with EF35mm F2 lens + 100Da in Lantau Island in Hong Kong in 2015 @F4
5x240s @iso400, with dark and bias calibrated in PI
Unguided with Vixen Polarie star tracker
Reprocessed in PI and PS

FB_iso400_5x240s.jpg (1.42 MiB) 已瀏覽 1254 次

[Eddy So]

[LT]

161. Helix

Just a play of combining Ha data as L channel and color data taken with 100Da

L channel = Ha = 9x600s, with dark and bias calibrated in PI
Taken with Vixen SD115S + SD reducer kit + 1600MM in Yuen Long in Hong Kong in 2021 @700mm F6.1
Autoguided with Vixen SXD2 mount

Color Data
11x300s @iso1600, with dark and bias calibrated in PI
Taken with EF400mm F5.6L lens + 40Da in Coonabarabran in Australia in 2013 @400mm F5.6
Autoguided with Vixen GP mount

L channel and color data combined in PI
Processed in PI and PS

FB_Ha-40Da_PS.jpg (1.52 MiB) 已瀏覽 1105 次

FB_40Da_HT.jpg (333.26 KiB) 已瀏覽 1105 次

[Eddy So]