SingAstro

I don't remember any info on this regarding local Singapore. The machine as seen in photos years ago (other country) and now on youtube , is quite big the size of a washing machine or fridge. it pumps out the air into vaccuum state within the heavy steel container and have a heater below to melt the...

Post here to share my experience as recently these few weeks there were forumers looking to mount C90 mak and 5inch newt OTA. IMO if can bring down the cost of mount , the lower entry barrier will allow more to join this hobby. Maybe somebody can finish the idea and build something similar. This woo...

i remember reading in cloudynights forum 8years ago they found the inside of the cover to be wet even when no hole for rain to go in , it's the formation of dew water. It may not happen if you're backed against a wall which cover a substantial part of the skydome compared to 360 degree exposure and ...

Just to notify others who may be using the same material as it's cheap $2 dewshade cover for small scope and finderscope. I was moving and cleaning my setup after a few years of inactivity , to my surprise the eva foam sheet flake out tiny particles on my table and fingers , washing and scrubbing do...

public library magazine section have about 5-6 issues of astronomy magazine , inside is 50% articles 50% advertisement.

I don't have newtonian tap water from hose is enough , $1 bottle of distilled water for final rinse if paranoid about mineral in water don't wipe it with microfiber cloth or lens pen , it's not safe because of microscopic scratches when water hose cannot solve , then use bottled distilled water to w...

if 2 scopes "same diameter" then same magnification will give you same brightness or "exit pupil diameter" the other factors that can change the "real world effect" 1) mirror may be about 90% in reflectivity fresh from factory and slowly age 1% per year to 80-81% region...

i laughed when I saw the news , suggesting night activity in an inauspicious place. Bold idea.

According to the chart , 90mm F5.5 is around the same CA as 80mm F/5

You need to keep the telescope and eyepieces in airtight dry storage too , that will take up more space and $ budget. Having the telescope mounted on the tripod as in display piece at home , only works for other country with dry climate , low humidity in air. 5se and 6se is different at the mount to...