JJ-Astro (Oberwerk) 22×100 binocular review

JJ-Astro (Oberwerk) 22x100

JJ-Astro (Oberwerk) 22×100

Visual observations of celestial objects are perhaps the most impressive and romantic part of amateur astronomy. Not a single photo can replace sensations from what is visible with eyes. In this regard, binocular astronomy has its advantages, since when viewed with two eyes at the same time, the limiting stellar magnitude is noticeably improved. Check it is very simple – look at the night sky, first with one naked eye, and then with two. Despite the fact that space objects are so far away that the stereo effect does not manifest itself, binocular observations allow you to immerse yourself in observations, relax your eyes and calmly peer into the image.

On New Year’s Eve, I decided to upgrade the equipment a bit and upgrade from the ZOMZ BPC 20×60 binoculars to a larger aperture. Large Celestron binoculars immediately disappeared due to the unstable quality of the products, namely, poor and unstable collimation in at least three binoculars of my friends (two copies 20×80 and one 25×100). Based on good reviews, the choice fell on JJ-Astro 22×100 binoculars, also known as Oberwerk. Unfortunately, the device has already been discontinued and can only be purchased on the secondary market. This is an astronomical binocular with central focusing, Porro scheme and without a break in the axis.

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Sun in h-alpha line. 2019-01-09, 13:37

Солнце в линии водорода. 9 января 2019 года, 13:37

Sun in h-alpha line. 2019-01-09, 13:37

Equipment:
-telescope Coronado PST H-alpha 40 mm
-mount Sky-Watcher Adventurer
-filter Deepsky IR-cut
-camera QHY5III178m.
Stacking 1000 frames from 2966, movie 60s (50 fps).
Location: Russia, Anapa, backyard.

My first shot of the Sun in the new 2019. The chromosphere is fairly calm, but there are several large prominences. Shooting was slightly disturbed by the dust in front of the matrix, I decided to unscrew the Ir-cut filter and was surprised to find that the brightness rose noticeably, as well as other dust particles appeared. The conclusion is strange – Coronado “flows” at IR. This feature requires more careful research. For the rest – no surprises, the camera still gives out a striped pattern, which was eliminated by the settings of the wavelets in Registax. I tried to shoot with Sky-Watcher Adventurer mount, approximately setup the polar axis. It is quite possible to shoot, only inconvenient without the remote.

Водородные туманности возле звезды Денеб, 6 ноября 2018 года

Hydrogen nebulas nearly Deneb, 2018-11-06

Equipment:
-lens Samyang 135\2.0 ED Canon EF
-camera Canon 550Da
-filter Svbony CLS clip EOS-C
-mount Sky-Watcher Adventurer
42 frames per 60s, ISO 800.
Calibration and stacking at DeepSkyStacker.
Scale: 25%. At link – 50%.
Location: Russia, Anapa, backyard.

This capturing was carried out purely for the sake of testing the filter Svbony CLS – it was interesting how this filter can improve the selection of nebulae from the background of the city illumination. The filter works quite well, however, when shooting with a Samyang 135\2.0 ED lens, there are noticeable red halos. The filter itself has a noticeable gap between the red and green rays. In addition, the camera with the removed “blue glass”, so the halos are more noticeable than on the camera without modification. We have to pay particular attention to the red channel during processing. On a mirror optics, as well as lenses with good chromatic correction, such halos should not arise.

Single frame example:

 

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