Sharpless 257 & friends, screenshot from my observing guides. Image is unmirrored.
Sharpless 257.jpg
Sharpless 257 & friends, screenshot from my observing guides. Image is unmirrored.
Sharpless 257.jpg
Victor van Wulfen
clearskies.eu - Clear Skies Observing Guides - CSOG - Blog - Observing Log - Observing Sessions
SQM is nothing, transparency is everything.