Search found 81 matches
- Sun Jul 24, 2022 5:12 pm
- Forum: Astrophotography
- Topic: Southern DSO Astrophotography
- Replies: 18
- Views: 18848
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...
- Fri Jul 15, 2022 6:02 pm
- Forum: Astrophotography
- Topic: Southern DSO Astrophotography
- Replies: 18
- Views: 18848
- Wed Jun 22, 2022 5:38 pm
- Forum: Buy and Sell
- Topic: WTS: [Sold] Skywatcher Explorer 150PDS F/5 Newtonian Telescope (With accessories)
- Replies: 8
- Views: 12379
- Wed Jun 22, 2022 5:36 pm
- Forum: Buy and Sell
- Topic: WTS: William Optics GT71 OTA with Accessories (Reduced to S$1300!)
- Replies: 4
- Views: 11750
- Sat May 28, 2022 11:30 pm
- Forum: Astrophotography
- Topic: A Method of Determining the Bortle Class at my Observation Site
- Replies: 2
- Views: 9718
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...
- Sat May 28, 2022 11:05 pm
- Forum: Astrophotography
- Topic: A Method of Determining the Bortle Class at my Observation Site
- Replies: 2
- Views: 9718
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...
- Sat May 28, 2022 10:05 pm
- Forum: Astrophotography
- Topic: A Method of Determining the Bortle Class at my Observation Site
- Replies: 2
- Views: 9718
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...
- Sat May 28, 2022 3:11 pm
- Forum: Astrophotography
- Topic: Southern DSO Astrophotography
- Replies: 18
- Views: 18848
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...
- Fri May 27, 2022 11:59 am
- Forum: Astrophotography
- Topic: Southern DSO Astrophotography
- Replies: 18
- Views: 18848
- Thu May 19, 2022 12:24 am
- Forum: Astrophotography
- Topic: Southern DSO Astrophotography
- Replies: 18
- Views: 18848
Re: Southern DSO Astrophotography
Next target is the Rim Nebula (NGC 6188), aptly nicknamed also as the Fighting Dragons in Ara. It took about 40 hours of total exposure to capture this stunning section of the southern Milky Way, and I am quite pleased with the details captured especially in the dark dust. https://astrob.in/9jigt5/C...