Artesky Artec 300 E F/4.5 Newtonian astrograph user experiences wanted

Equipment Filter Wheel Focuser Reflectors Monochrome Buying Advice Collimation Coma
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Aleix Roig avatar
Aleix Roig avatar

Hi all,

I’ve been looking at the Artesky Artec 300 E F/4.5 Newtonian Astrograph and I’m curious about other people’s experience with it:

https://artesky.it/gb/artesky/artec-astrographs/6079-astrograph-artec-300-e-f45-8052278161596.html

A few specific things I’m wondering:

  1. Overall optical performance — how do stars look toward the edges? Any noticeable coma or field curvature?

  2. Collimation stability — is it easy to collimate and does it stay in good collimation over a night/session?

  3. Focuser quality and travel — is the focuser smooth, rigid, and sufficient for imaging?

  4. Backfocus — can anyone share the exact backfocus measurement from the flange/secondary to the focal plane?

I’m specifically interested in whether the backfocus works well with an OAG-L (ZWO) + ASI2600MM + 7-position ZWO filter wheel — does that train reach focus without issues? Any spacing or adapter notes would also be useful.

Thanks in advance for any insights or experiences!

Aleix Roig

www.astrocat.info

@astrocatinfo

Well Written Engaging
Dan Brown avatar
Dan Brown avatar

I’m interested in this telescope as well. I did find two images on Astrobin, https://app.astrobin.com/equipment/explorer/telescope/70852/artesky-artec-300

There is a 3 page thread on cloudy nights about the artec series of scopes.

I believe the 300 is being redesigned and will be available in a few months.

Dan

Aleix Roig avatar
Aleix Roig avatar

Many thanks Dan. I got really great feedback on CN if it can be of your interest: https://www.cloudynights.com/forums/topic/989855-newtonian-newton/

This OTA looks promising! Thanks for sharing the link.

Best regards,

Aleix Roig

Dan Brown avatar
Dan Brown avatar

Aleix Roig · Jan 14, 2026 at 08:02 PM

Many thanks Dan. I got really great feedback on CN if it can be of your interest: https://www.cloudynights.com/forums/topic/989855-newtonian-newton/

This OTA looks promising! Thanks for sharing the link.

Best regards,

Aleix Roig

Wow that was great feedback on CN. I will have to investigate the mounting system of the scope, too bad space koala’s was modified, it is difficult to know exactly what it ships with.

Dan

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