Astrophotography alt

[kimo]

I am wondering that any problem doing DSO Astrophotography Below 45deg Alt? mine all are below 45deg alt. Probably thats the reason its taking long time for each sub to cook.

[antares2063]

our Earth and atmosphere are "curved" . When we look at objects below 45 deg altitude, we are looking through thicker layers of air. Starlight also need to pass through more air hence dimmer and more turbulence etc. And in the case of singapore (but less problematic in a dark place), it means more light pollution compared to looking straight upwards...hope this helps.

regards,
Junwei

[kimo]

Thanks for info.