Schickard, Nasmyth and Phocylides 25 Jan 2021 (Bogdan Borz)

Contains: Solar system body or event

Schickard, Nasmyth and Phocylides 25 Jan 2021

Acquisition type: Lucky imaging

Schickard, Nasmyth and Phocylides 25 Jan 2021

Acquisition type: Lucky imaging

This was the first time I tested the ASI 224mc for lunar imaging. I planned to do a color moon imaging. I already had the UV/IR cut filter in place, which I calmly replaced with the Astronomik 642 IR pass (problem of habit). Only after the session I realized that I could no longer make a correct RGB rendition when shooting only in infrared... I shot some images with the 2x Barlow from Altair Astro and I was really satisfied how this one came out. The seeing was very good 4-5/5. I can only imagine what the result would be with a C14 that has a diameter twice the size of my Mak!

I usually use the ASI 290mm for lunar imaging. It has 2.9 µm pixels vs 3.75 for the ASI224mc. The Dawes limit for the Mak 180 is 0.64 and the sampling of the Mak 180 + ASI 224mc is 0.29'' per pixel. Down to 0.22'' with the ASI 290mm. This image was shot with the Barlow at a sampling rate of 0.14''/pixel. I made some similar images ASI224MC+Barlow vs. ASI290MM no Barlow and I could not see an improvement with the slightly lower sampling and the longer focal (the seeing is the limiting factor anyway).

These craters are located in the S hemisphere, SW. Schickard measures 227km in diameter. The funny etymological story is that Phocylides crater was not named after the ancient Greek Milesian poet, but after a Dutch Astronomer Johannes Phocylides Holwarda (also known as Johannes Fokker, not related with the Meet the Fockers movie : ) ). He died in 1651 and discovered the period of Mira's Omicron variable star (330d). source : Wikipedia, Atlas Lunaire.

10% of 2004 frames.

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Schickard, Nasmyth and Phocylides 25 Jan 2021

Schickard, Nasmyth and Phocylides 25 Jan 2021

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Schickard, Nasmyth and Phocylides 25 Jan 2021

Schickard, Nasmyth and Phocylides 25 Jan 2021

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