大坳門 Field Test

[kitkit]

Nice to meet tatkongau on 12/31!!

40D mod, iso 800, 25s x 98, f/2.5(Sigma 50mm 1.4), Polarie

Really found a way to correct the white balance in DSS, but many stars were gone after DSS

[kitkit]

after correction

[Skyobs]

是否用了UHC之類較窄帶光害濾鏡? 那些紅綠條紋較難處理掉,難免要把天底調黑一點.
建議JPEG壓縮不要太低,以免影響星點質數. 80-90%一般較合適.

[kitkit]

Thanks Skyobs, I did apply a light filter during photography. the green and red lines were observed after photo compression. the original tiff and jpeg don't have those lines. I will go out to practice again once the weather is getting better.