Search found 73 matches

by rifleman175
Thu Jul 28, 2022 1:19 pm
Forum: Astrophotography
Topic: Widefield MW Dust in Scutum
Replies: 3
Views: 359

Re: Widefield MW Dust in Scutum

Great shot considering the severe light pollution here in Singapore! By the way I can definitely vouch for NoiseXterminator, it simply works like magic!
by rifleman175
Sun Jul 24, 2022 5:14 pm
Forum: Astrophotography
Topic: Southern DSO Astrophotography
Replies: 14
Views: 3782

Re: Southern DSO Astrophotography

hhzhang wrote: Sat Jul 16, 2022 1:03 pm
rifleman175 wrote: Fri Jul 15, 2022 6:02 pm SHO image of the Lagoon Nebula and the Trifid Nebula

Awesome!
Thanks for the encouragement! Your images are awesome too!
by rifleman175
Sun Jul 24, 2022 5:12 pm
Forum: Astrophotography
Topic: Southern DSO Astrophotography
Replies: 14
Views: 3782

Re: Southern DSO Astrophotography

Digging into the data collected over the past few months, I stumbled upon this gem of an emission nebula in Carina. And no, it is not the Carina Nebula. Well, from the picture below you would have seen that it is instead the Statue of Liberty Nebula (NGC3576), together with 2 other prominent HII reg...
by rifleman175
Fri Jul 15, 2022 6:02 pm
Forum: Astrophotography
Topic: Southern DSO Astrophotography
Replies: 14
Views: 3782

Re: Southern DSO Astrophotography

SHO image of the Lagoon Nebula and the Trifid Nebula

Image
by rifleman175
Sat May 28, 2022 11:30 pm
Forum: Astrophotography
Topic: A Method of Determining the Bortle Class at my Observation Site
Replies: 2
Views: 2444

Re: A Method of Determining the Bortle Class at my Observation Site

Based on the results from image analysis, it would seem that the limiting naked eye magnitude at my observation site in Sengkang should theoretically be 4.8. However, I regret to say that I am unable to see stars so dim even after having reasonably dark adapted. Under the best conditions, I was able...
by rifleman175
Sat May 28, 2022 11:05 pm
Forum: Astrophotography
Topic: A Method of Determining the Bortle Class at my Observation Site
Replies: 2
Views: 2444

Re: A Method of Determining the Bortle Class at my Observation Site

I am using a ZWO ASI2600MM Pro camera for most of my astrophotography works, so the test will be done with it. The formula for the light pollution rate is given as such: light pollution rate = (median ADU of 1 light frame - median of master bias frame) * electrons per ADU / the exposure length of th...
by rifleman175
Sat May 28, 2022 10:05 pm
Forum: Astrophotography
Topic: A Method of Determining the Bortle Class at my Observation Site
Replies: 2
Views: 2444

A Method of Determining the Bortle Class at my Observation Site

Having fallen into the rabbit hole of astrophotography for 2 years, I have plenty of imaging nights under Singapore's obnoxiously light-polluted skies. As such, I have been mostly limited to doing narrowband imaging with monochrome astronomy cameras to minimise the adverse impact of these manmade ph...
by rifleman175
Sat May 28, 2022 3:11 pm
Forum: Astrophotography
Topic: Southern DSO Astrophotography
Replies: 14
Views: 3782

Re: Southern DSO Astrophotography

WOW that looks very good!! How did you manage to find 20 hours of good weather?! With my set-up on the balcony, I pretty much just shoot every single night now as long as there is clear weather. No more lugging the heavy scope + tripod + mount around in the night, battling the mosquitoes and the he...