CX Dra yesterday :
Comparaison with the 18/05 - 23/05 :
EM Cep :
AG Dra, EM Cep, Be stars
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- Posts: 445
- Joined: Sun Jan 24, 2016 7:14 am
Re: AG Dra, EM Cep, Be stars
To: Etienne,
Nice results!.......I'm usually too scared of going beyond 900 sec sub-exposures in the city, but when i go to my dark sky site I may try a 1200 sub exposure
with the LhiresIII and 1800 l/mm grating.
James
Nice results!.......I'm usually too scared of going beyond 900 sec sub-exposures in the city, but when i go to my dark sky site I may try a 1200 sub exposure
with the LhiresIII and 1800 l/mm grating.
James
James Foster
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
eShel2-Zwo ASI6200MM Pro
Lhires III (2400/1800/600 ln/mm Grat) Spectroscope
LISA IR/Visual Spectroscope (IR Configured)
Alpy 200/600 with Guide/Calibration modules and Photometric slit
Star Analyzer 200
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- Posts: 1040
- Joined: Mon Aug 31, 2015 11:26 am
Re: AG Dra, EM Cep, Be stars
Hello James,
I think you must try long exposure, it's possible that near Ha there is not many lights ? Try for know if it's possible.
Try 300s, 600s, 900s, 1200s and make comparaison of the SNR, it's important ton make long time. you have a big diameter optique ?
I think you must try long exposure, it's possible that near Ha there is not many lights ? Try for know if it's possible.
Try 300s, 600s, 900s, 1200s and make comparaison of the SNR, it's important ton make long time. you have a big diameter optique ?