Askar 107PHQ review

First impressions:
I took the quadruplet out of the case and it was absolutely clean and without any blemishes.





Very solid and TOP-quality APO, once again there is nothing to complain about. The 3.4" OAZ is a dream; nothing moves in directions it shouldn't, and it runs smoothly and smoothly.

At the end of the focuser is a rotation unit, which makes it easy to rotate the camera. This, too, has been meticulously engineered. Nothing moves in unwanted directions, whether locked or unlocked.
If you remove the adapter ring to M48, the next larger ring has an M54 thread, and you gain another 20mm, giving you 99mm of clearance to the sensor.
Then you get 119mm from M68 / 149mm from M86 if needed, up to 120mm when using the 2" clamp (a 1.25" adapter is included). Enough space for all the necessary accessories.
An angled prism is not included, but since the 107PHQ is intended as a photo machine, this is negligible. The option for visual use is certainly available.
Optics:

The The optics of the Askar 107PHQ were specifically designed for astrophotography. With a focal length of 740mm and an aperture ratio of f/7, the quadruplet apochromatic refractor is certainly not the fastest in its class, but it is one of the best corrected, both in terms of flat field and color correction in focus.
Askar specifies correction for full-frame sensors.
When using the optional reducer, which reduces the focal length to 524mm and the aperture ratio to f/4.9, the image field is still corrected for APS-C sensors. Anything beyond that is still illuminated, but the star colors and shapes are negatively affected. The reducer requires a fixed distance of 55mm from the M48 thread to the sensor.
We have tested the 107PHQ natively and with the reducer and can confirm these specifications as correct.

It doesn't always have to be fast!
This astrograph rewards the patient astrophotographer with a detailed and color-neutral image. But see for yourself in The sample images provided by our stargazing friend Markus Wirth.

Equipment used:
-Skywatcher EQ8-R Pro Synscan GoTo mount, load capacity up to 50 kg without a tripod
-Guide scope: SkyWatcher EVOGUIDE 50ED guiding telescope and finder
-Cameras used:
ToupTek APS-C camera ATR3CMOS26000KMA (IMX571) - Mono
Touptek Color Astro Camera SkyEye62AC (IMX455) TEC-cooled, full-frame

RGB image of M81/M82, native without filter.
Taken with a ToupTek SkyEye62AC (IMX455 RGB full-frame sensor)
Impressive details of M81/M82 are already visible at 30x300s (2.5 hours total exposure time).

 
M106 Galaxy
Shot here at 72x300s with a ToupTek 2600KPA (IMX 571 RGB APS-C sensor).
Here, too, a result that shows very nice details of the galaxy after a relatively short exposure time.


 

 
Proboscis Nebula in SHO with the Askar 107PHQ including reducer.
Here, too, the Askar 107PHQ including the reducer delivers impressive data even after a relatively short exposure time.
The camera used was a Touptek 2600KMA (IMX571 mono APS-C sensor).

Filters used:
Askar 2" HA 3nm filter, 24 x 600s
Askar 2" OIII 3nm filter, 37 x 600s
Askar 2" SII 3nm filter, 31 x 600s




If you have any further questions, please feel free to contact us for a consultation.
Clear nights!