I got this adapter to connect my ASI camera directly to any Canon EF lens. The fit is nice and snug, but not too tight. Quality construction and you can ad a 2" filter internally. Now I can use a couple camera lenses instead of dragging the entire telescope out.

Really enjoying my new telescope. I've been observing Saturn every clear night since I got it. Nice sharp crisp images. Easy to carry, set up, and point. Thanks!!

Though I already own a 72mm doublet OTA with a focal length close to 450mm, the FRA400 was irresistible to me because it was a quintuplet design and I didn't need to worry about a field flattener or backfocus. Additionally, the FRA400 is a little faster than the other scope, F/5.6 versus F/6.

So far, imaging sessions have exceeded my exp

ectations with three [3] DSO objects: North American Nebula, Pelican Nebula and the Veil Nebula complex. The FRA400 proved its worth on all three DSO imaging sessions. In my opinion, the best test case was shooting the Veil Nebula complex.

The only complaints I have with the FRA400 is that it does not come with a storage case and a tool [hex wrench provided] is required to open and close the mounting rings; an oversized knob is my preference for that chore. Still, the detractors aren't enough for me to ding its star rating.

For each imaging session with the FRA400, the following equipment list was used.

Conditions
Sky: Bortle 7-8
Wind: calm
Average Start Temp: >80 Fahrenheit, >27 Celsius

Equipment
FRA400 OTA, 400mm FL
ZWO 2600MM Pro, Gain = 100, Cooling 0 Celsius
ZWO EFW with 2” Baader 6.5nm Ha, Sii, Oiii filters
ZWO ASIair Plus controller
ZWO EAF
ZWO ASI120MM guide camera
32mm guide scope, 120mm FL

Other Equipment Used
ZWO AM5 mount
ZWO TC40 tripod with 200mm pier extension
Power Supply - private assembly

In summary, this was money well spent. By adding the 0.7x reducer, I now have a 400mm OTA and a 280mm OTA. While the reducer awaits for skies to clear, the basic FRA400 is a real winner. Setup was quick and without any need to adjust for backfocus.

It looks good but I can't use it yet.

I use these for astronomy. They are excellent. As always, great customer service.

Super value and surprisingly good optics! Only downside is that since the two cylinders are not connected toward the end of the barrel, it is possible for them to not be properly collimated. Ask Highpoint to check collimation prior to shipping and you should be good to go! Also very light weight. They do jiggle a bit when looking at stars, but not

bad. They are super for terrestrial use.