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SCA310 fast OTA at f/3.8 - Sharpstar

Equipment
9 replies•300 views
Aleix Roig avatar
Aleix Roig avatar

I’m taking a close look at this new super-fast OTA by Sharpstar, the SCA310, the big, fast brother of the SCA260.

From what I’ve read so far, it seems to offer several advantages over similar-aperture Newtonians:

Compact design

Wide backfocus range

Corrected, flat field

Has anyone had the chance to test it yet? I’m really excited to hopefully try it soon. My previous experience with the brand has been excellent. I currently own an FRA300 and a 13028HNT—both great OTAs.

Many thanks for your insights.

Best wishes,

Aleix Roig

@astrocatinfo

www.astrocat.info

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Anderl avatar
Anderl avatar

Interesting sounding scope but the sca260 had a lot of bad reviews and while i have no personal experience i would stay away from it

Rick Krejci avatar
Rick Krejci avatar

And at that $8k price, I’d definitely wait for some independent, non sponsored reviews.

Well Written
Aleix Roig avatar
Aleix Roig avatar

Let’s wait for the early adopters to post their initial thoughts about it.

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ScottF avatar
ScottF avatar

For what it’s worth, I have the SCA260 and am quite happy with the images.

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Joey Conenna avatar
Joey Conenna avatar

Definitely a wait and see at that price.

ScottF avatar
ScottF avatar

Joey Conenna · Jan 5, 2026 at 02:42 AM

Definitely a wait and see at that price.

Yes, that’s a not price point to purchase without reading some reviews.

Miguel Noppe avatar
Miguel Noppe avatar

Anderl · Jan 4, 2026 at 03:41 PM

Interesting sounding scope but the sca260 had a lot of bad reviews and while i have no personal experience i would stay away from it

I heard good things from the V2 version of the SCA260.

As for the 310, I would wait and see how the first users fair with this one for sure .

CS

Craig Towell avatar
Craig Towell avatar

Just looking at this on their website, whopping 60% central obstruction - also comes with an M48 adaptor on the 3.35” focuser which seems and odd choice.

📷 Screenshot 2026-01-05 at 16.25.32.pngScreenshot 2026-01-05 at 16.25.32.png

Seung-Jun Kim avatar
Seung-Jun Kim avatar

Craig Towell · Jan 5, 2026, 04:29 PM

Just looking at this on their website, whopping 60% central obstruction - also comes with an M48 adaptor on the 3.35” focuser which seems and odd choice.

📷 Screenshot 2026-01-05 at 16.25.32.pngScreenshot 2026-01-05 at 16.25.32.png

The Website also stated that it includes three replaceable adapter: M68, M54, and M48

“The rear features multiple threaded adapters (M68/M54/M48),”