Tag Archives: imaging

Stargazing 2019.003.3 Observing Saturn with filters

PolyWogg.ca
June 8 2019

It was getting late in the evening, almost 1:00 a.m., in my backyard on June 6th and I was ready to call it a night. But Saturn was peeking out from behind some houses, and I thought, “I already have all my filters set out, why not try them?”.

As I mentioned in the previous log about Jupiter, the seeing conditions sucked, with lots of haze in the sky. Jupiter looked like it was underwater at times. Anyway, it was what it was.

The Hyperion 36mm 2″ lens showed Saturn nice and bright, but no real division other than the main rings around the planet. The 25mm super Plossl showed things clear and bright, but as with the observing of Jupiter, a 15mm Plossl was too strong and anything with my Powermate giving me virtual 12.5 or 7.5 was way too strong. Again, my 17.3mm Delos was the Goldilocks of the night, with power just right. FYI, I was still aligned from earlier on Regulus, Antares and Denebola.

I knew my Ultrablock and OIII would do nothing so didn’t bother. The Moon and Sky Glow filter was too dim, and I couldn’t find a good setting for the variable polarizing for this one (but I was tired, so maybe not a fair test).… Read the rest

Stargazing 2019.003.2 Observing Jupiter with filters

PolyWogg.ca
June 8 2019

I was set up in my backyard on June 6th, trying out various things, and started observing Jupiter around 11:00 p.m. I think. I’m still getting going with my new eyepieces and layouts, so observed with my 36mm Hyperion 2″ lens, a 25mm super plossl, a 17.3 mm Delos, and a 15mm plossl. Just for fun, I tried playing with the Powermate 2x magnifier with it too, but seeing was way too hazy to pull up anything good. FYI, for alignment, I did a simple three-star Sky Align for the night to get going, and ended up with Regulus, Antares and Denebola.

At super low power, the Hyperion 36mm showed Jupiter relatively clear, moons were easily identifiable. The 25mm super plossl showed me good definition in the bands. But I tried the 15mm plossl (by itself) and played with the Powermate 2x to give me a virtual 12.5mm and 7.5mm power options, all three were too much power for the seeing conditions.

Which left me “best seeing” at 17.3mm with the Delos, with the major bands clear, but the image still pretty watery for the conditions. Nevertheless, it’s a good power to play with my various filters at the 1.25″ size.… Read the rest