Indeed, from f/10 to f/3.3. It becomes a hyperstar at its minimum settings. However, it's far from perfect; there are always artifacts around the stars at the edges.
Wow! You can crop the edges, but with such a focal length, small targets like planetary nebulae or globular clusters become hard to capture. :) Any idea how to get my hands on something like that?
It depends on the planetary nebulae. For example, Star.Hunter captured the Ring Nebula with a C8 and a Meade f/3.3 reducer – https://star-hunter.ru/en/tumannost-m57-kolco-7-maya-2016-goda-0220/
You should keep an eye on the classifieds section on Astroforum; that’s how I bought mine. eBay might also be an option, but not under current conditions…
I checked, but according to his words, he achieved a reduction coefficient of 0.4 by adjusting the rings, which is quite sufficient for small objects.
I regularly browse the second-hand market, but haven't come across anything similar yet :(
Thank you for the information, good luck, and more great works of the night sky!
P.S. If you happen to come across it in your field of view, please let me know. I can leave my phone number for contact:
8 913 850 4799, Alexey, city of Tomsk. On the forum under the same username.
Comments
You should keep an eye on the classifieds section on Astroforum; that’s how I bought mine. eBay might also be an option, but not under current conditions…
I regularly browse the second-hand market, but haven't come across anything similar yet :(
Thank you for the information, good luck, and more great works of the night sky!
Thank you! You too!
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