Reprocessed NGC7331 & 史蒂芬五重星系 @ PTC, Sai Kung, Hong Kong

[anyone]

[鄧登凳]

Could it be the first shot in HONG KONG?

NGC 2841 - 喜歡她的顏色和簡美的螺旋結構形態。有否同感?

L 300min x 2, 180min x 4
R 300min x 3
G 300min x 3
B 300min x 3

Not sure whether it is the first in Hong Kong but definitely the first in this forum. Well done.

It is very colourful but I think the colour in your photo is completely off. See http://heritage.stsci.edu/2011/06/big.html

[Steve]

Could it be the first shot in HONG KONG?

NGC 2841 - 喜歡她的顏色和簡美的螺旋結構形態。有否同感?

L 300min x 2, 180min x 4
R 300min x 3
G 300min x 3
B 300min x 3

Not sure whether it is the first in Hong Kong but definitely the first in this forum. Well done.

It is very colourful but I think the colour in your photo is completely off. See http://heritage.stsci.edu/2011/06/big.html

Thanks for your opinions.
May be i set the color saturation a bit high, may be closer to the following one color saturation strengthened?

[鄧登凳]

I don't see any purple/violet colour in the Hubble's image even with an over-the-top saturation adjustment.

[Steve]

I don't see any purple/violet colour in the Hubble's image even with an over-the-top saturation adjustment.

I can see some purple or pink & blue region.

Another reference:
http://apod.nasa.gov/apod/ap150428.html

[鄧登凳]

Please have a look at the imager's original description. The image is NOT a true colour LRGB image. It is based on partial narrow band data.

Form http://www.astrobin.com/127003/

NGC2841 in Ursa Major
This has been probably the tough assembling I did so far.
Luminance has been created using a mix of 814nm and 435nm filters from the ACS Hubble camera and Subaru frames in the RC and I+ bands. The RGB has been composed puzzle like due to uncomplete channels both for the galaxy and background using ACS, WFC, WFPC2 and Subaru frames.
Partial usage of the RGB data from the same image of Robert Gendler.

Bests
Roberto

[Steve]

Please have a look at the imager's original description. The image is NOT a true colour LRGB image. It is based on partial narrow band data.

Form http://www.astrobin.com/127003/

NGC2841 in Ursa Major
This has been probably the tough assembling I did so far.
Luminance has been created using a mix of 814nm and 435nm filters from the ACS Hubble camera and Subaru frames in the RC and I+ bands. The RGB has been composed puzzle like due to uncomplete channels both for the galaxy and background using ACS, WFC, WFPC2 and Subaru frames.
Partial usage of the RGB data from the same image of Robert Gendler.

Bests
Roberto

Even from the previous link you provided

http://heritage.stsci.edu/2011/06/big.html

I can see pink & blue region (light purple = pink +blue)

Anyway, my photo is not comparable to HST's!

[Steve]

20160302 雲來雲往，勉強影一疏散星團M46好過空手而回。

L: 120X3
RGB: 120X4 each

[Eddy So]

[anyone]

Steve 很勤力。

[LT]

這個M46的星星很出色。不知是不是真色呢。

[Steve]

這個M46的星星很出色。不知是不是真色呢。

今次拍攝條件很差，有些偏差也不出其。

[Steve]

陰雨綿綿，加上個人原因，有排都無機會攝星。
唯有換湯不換藥，拿些舊相crop，rotate下，自娛一番。
PTC的M106，影得較好的一張，重post:

[anyone]

[Eddy So]