SingAstro

Thanks Ivan

Thanks Orly, yah, Changi sea-side North sky is not bad, but once the mount do a Meridian crossing flip & enter into North West Sector, the light pollution from the street lamps along the sea-side pour in, so can only do North East portion before transit. Better if we can go to darker sites, so t...

Yah, Ivan, i think you are right, i a bit too fast jump to conclusion

Thanks Remus and Airconvent, there is one common thing in us (fellow Astro hobbyist), once bitten by the "Astro Bugs", will not be able to quit for life regardless of the variation in methods, approach & instruments used in enjoying this hobby. As pass few months were rainy season, i h...

The comet C/2014 Q2 is setting earlier & earlier each day, caught it over a few nights in Tampines, Changi sea-side etc, but the one on 17 Jan 2015 looks slightly better Shooting Data: 210s (Av) X6 @ ISO 1600, Canon 550 D un-mod, combined, No Gaussian Blur for this one here (slight diff from F/B...

Actually it is very easy for an APer to cross over to Visual, but i am not sure the other way round

Ivan, all your images are super nice, i now then believe that a faster system (bigger aperture scope at lower F ratio) under dark sky, produce much better images than a small refractor although the later is more resilient to light pollution in urban & sub-urban environment. Other elements are st...

Very impressive Orion neb, good work John, i can in fact see the running man neb, i can see that you are quite an innovative person, like Ivan (me ? no lah, retiring )

Thanks Mariner, yah, a lot of difference after combining the sub-exposures. "Screen stretch" of individual sub may not be useful unlike a "Log stretch". For a wide dynamic range object such as Andromeda Galaxy performing "Log Stretch" to each subs before combining them ...

Helix Nebula has a low surface brightness and therefore is a relatively challenging object or weak signal unlike bright nebula like Orion Neb, Eta Carina etc. Need to collect as much light frames at the longest attainable exposure time, stretch each subs & then combined them together (using 2013...