|
I have two pairs; a vintage pair of 7x42s Swarovski Habicht (a family heirloom) and a 6 months old pair of 15x70s Celestron SkyMaster.
I find the SkyMaster tire me quickly due to their size (plus you already have 20x80s anyway) but are very good at night. I haven't noticed any CA but didn't look at the moon, planet or bright stars. I've mostly used them in Vanuatu to track down those Messier objects I can't see in Victoria. Open Clusters such as Melotte 20 really stood out. Daytime is absolutely fine though the outer 10-15% isn't quite sharp.
The Swarovskis are portable and sharp to the edge even in daylight and are great for spotting objects but the 42mm aperture is a bit small for my liking and your use case of scanning the sky. If they didn't have sentimental value, I'd probably sell them to get 10x50s.
In your shoes, I'd probably research image stabilised binos instead. They should be awesome for scanning and tracking. That said, I don't have first hand experience so don't take my word for it.
|