SingAstro

Thanks for the tip. Yeah, I think I also overstretched some areas like core of M51. I gotta learn how to properly use these image processing software first. Previously I just do visual and simple EAA with no post processing. Life was much simpler then :). But astrophotography can be addictive! (And ...

Images of M51 and M57 taken on Thursday 9 May 2024 through Williams Optics Megrez II 80mm. Unguided subs using Zwo Asi533MC Pro cooled at 0degC. Streaks on M51 image likely due to live stacking. I did not take darks or flats. M51: 60s x 50 live-stack, stretched using GIMP. Stacked100_M51_30.0s.jpg M...

It is quite intuitive to practicing imagers that Bortle class do vary over our small island. (Refer rifleman175's A Method of Determining the Bortle Class at my Observation Site), i do agree with rifleman's finding that "the light pollution at Senkang is around Bortle 7.0 at altitude of 55 deg...

Hi Bernard, Very nice images. I'd actually venture to guess that it's really Bortle 7 to 8 at you location rather than Bortle 9 from your images. I'd suggest that you start stacking more than 30 subs (1 hour at 30 s is 120 images, 3 hours is 360 images) and then process offline. Looking at your dat...

My second attempt at astrophotography from our Bortle 9 skies. Nothing fancy, just UV/IR filter with uncooled zwo585mc camera, sharpstar 61edph iii w reducer/flattener (FL 268mm, F3.9), iOptron cem26 (unguided). All without darks, flats etc, unprocessed other than live-stack using asiair mini. Omega...

It was clear until just after midnight, when patchy clouds started to drift in. At that point, I called it a night and packed up. It was also getting very balmy

btw, my photos from last night are in this thread

I was able to do some imaging tonight from 9.30pm - 12mn. Will upload the live stacks tomorrow.

Yeah, skies looks clear now and I’m hoping it continues to 1-2am Keeping fingers crossed

So much for the iOS weather app and our Meteorological Service. A few hours after I posted, the forecast for the night changed from partly cloudy to cloudy, and it actually started raining at 11.30pm

If the iOS weather app’s precipitation map suggests light or little cloud cover for the night, I check the skies every 1-2 hours to see if skies are mostly transparent. I find that the equatorial weather here is just too changeable for any forecast to be reliable predictor of clear skies. If the ski...