After removing the mirror, take a sheet of notebook paper, lay on the mirror and trace around the outer perimeter. The following is a 4.5-inch mirror which I center-marked earlier this year.
Fold the circle template in half, then quarter and then make a tiny hole in the center with any small sharp object. Now take a black Sharpie and “lightly dot” the center of the mirror, via the tiny hole. Now you are ready to replace the mirror and begin collimation. I’m not going to discuss collimation in this post, but have provided the following link from “High Point Scientific”…which is excellent.
A collimation tool will be needed: I use a homemade machined collimating tool (see below) which works great. However, consider a Cheshire collimating eyepiece which is not very expensive at all. I have a Cheshire eyepiece, but most often find myself using only my homemade tool. A laser collimator is not necessary.
A couple photos of my Cheshire eyepiece as following which I also use on occasion:
While the mirror is out, it’s the perfect time to check if cleaning is needed.
The following procedure has allowed me to clean telescope mirrors with excellent results. It should, however, be noted that your results may vary. And mirrors coatings are very delicate, so be careful and use good common sense and care.
Information as following from the Astronomics site:
Sky Rover 2×54 mm Constellation Binoculars
A Wider, Brighter Vision of the Cosmos
The Sky Rover 2×54 mm Constellation Binoculars redefine what it means to see the night sky with both eyes. With an immense 2× magnification and oversized 54 mm objectives, they gather over four times more light than the human eye alone — revealing countless faint stars, glowing Milky Way structure, and the delicate contrast of dark nebulae against their luminous backdrops.
These binoculars aren’t about power — they’re about perspective. They preserve the natural beauty of the night sky while subtly magnifying it, letting you see it as it truly is — only brighter, sharper, and deeper.
Ultra-Wide, Immersive Field
With an astonishing 36° true field of view, the 2×54 captures entire constellations at once. Orion, Taurus, and the Pleiades sit comfortably within the same frame, while the Milky Way arcs across the field as a seamless, glowing river of starlight. It’s the closest thing to a panoramic stargazing experience you can hold in your hands.
The low magnification and large exit pupil make viewing effortless — no focus adjustments, no eye strain — just pure, expansive immersion.
Precision Optics and Bright, Natural Views
Each 54 mm objective uses fully multi-coated optical glass to maximize transmission and suppress reflections. The custom wide-angle prism system maintains perfect alignment and contrast across the entire field, ensuring pinpoint stars and color-neutral performance. Internal baffling and edge-blackened elements minimize stray light and keep backgrounds dark and velvety, even under less-than-perfect skies.
The housing is lightweight but strong, made from precision-machined aluminum alloy with a matte finish that resists dew and glare. Fixed-focus design means it’s always sharp at infinity — simply lift it to your eyes and the universe appears.
Optional 56 mm Sky Rover UHC Filters
The 2×54 mm Constellation Binoculars feature M56 threaded objectives and support optional Sky Rover 56 mm Ultra High Contrast (UHC) filters. These dedicated accessories are engineered to reduce the impact of urban and suburban light pollution, dramatically improving nebular visibility under bright skies.
Each UHC filter is crafted from optical glass with double-sided multilayer coatings and housed in a durable aluminum frame with precision laser engraving. The UHC (Ultra High Contrast) design selectively transmits key emission wavelengths while blocking broadband light sources such as street lamps, skylight, and artificial glow.
By attaching the filters directly to the binoculars’ threaded barrels, you can transform the 2×54 into a genuine wide-field deep-sky instrument. Nebulae like the Veil, North America, and California Nebulae spring to life with structure and contrast, even from light-polluted suburbs.
Under the Night Sky
From dark sites, the 2×54 delivers an astonishingly natural yet enhanced view of the Milky Way — rich star fields and faint clusters scattered across a glowing backdrop. Under filtered skies, emission nebulae gain definition and shape, while the faint tendrils of Barnard’s Loop and the nebulous regions in Cygnus become apparent to the eye.
During meteor showers, the 36° field allows you to watch entire streaks form and fade. For auroras, eclipses, and zodiacal light, the sense of scale and realism is breathtaking.
For Earth and Sky
Although designed for astronomy, the 2×54 also excels for scenic twilight landscapes, aurora watching, or city skyline viewing. Its wide, natural perspective enhances faint contrast without distorting scale, making it ideal for photographers, educators, and casual stargazers alike.
What Users Are Saying
Reviewers describe the Sky Rover 2×54 mm as “a revelation — like seeing the sky with superhuman eyes.” Many praise its effortless immersion, low-light performance, and the ability to bring the Milky Way to life even from suburban skies. With the optional UHC filters attached, experienced observers report views of nebular detail they once thought impossible without a telescope.
Observing Tip
Use the 2×54 mm Constellation Binoculars from a reclining chair under a dark sky, and let the Milky Way drift slowly through its enormous field. With UHC filters installed, point toward Cygnus or Orion — you’ll see subtle structure and contrast that most binoculars can’t touch. For meteor showers or aurorae, simply lie back and let the sky unfold.
Final Thoughts
The Sky Rover 2×54 mm Constellation Binoculars are more than an observing tool — they’re a new way of seeing the night. Whether paired with Sky Rover’s dedicated 56 mm UHC filters or used alone under pristine skies, they deliver an experience that is both scientifically precise and emotionally profound. This is wide-field astronomy at its purest.
I’m sharing the following information by “expert” visual deep-sky observer, Mircea Pteancu from Romania. Thank you Mircea for sharing!Roger Ivester
Roger, Everything by Astronomics you shared…confirmed by my own observations, using a pair of 2×54 binoculars with the Omegon trademark name. Mircea Pteancu
I used the 2x54mm binoculars under a Bortle 4 sky, and the views were wonderful. There, I observed with the Omegon 2x54mm: M8, M24, M25, M16, M11 (at limit of visibility) M13, M92 like a hazy star, M39 and Mel 20 with some resolved stars, Stock 23 (at limit of visibility) and the Double Cluster in Perseus.
I also saw some Deep Sky objects from the city with the 2x54mm’s: Examples would be M13, Mel 20 with five stars, Perseus Segment and again the Double Cluster.
In M45 I first counted eight stars, with a maximum of eleven stars.
From the city and with naked eyes I can reach magnitude 4.5 at best.
With the 2×54 binoculars, I can reach a magnitude 5.6.
From the city I resolved some wide double stars using the binoculars: STFA 37, Omicron Cyg as a double, Alpha Cap, Beta Cap, Delta Lyra as a double but the companion is quite dim.
When I was a kid, I could split Epsilon 1-2 Lyrae with the naked eyes. However, I lost this ability around the age of 40. Now, the 2x binocular have given me back this wonderful ability. Epsilon Lyrae is split large and bright, with “dark sky” between the stars.
The Moon with the 2×54 binocular are still without craters and appearing only as a shinny globe. However, the mare and oceans are obvious.
One field of astronomy not covered in the reviews are variable stars: Yes, I also use the 2x54mm binocular for variable star observations. Like those I reported to the AAVSO for September 26, September 29, November 1 and November 14, 2025. The variable stars were Beta Lyr, R Lyr, Alpha Her, Eta Aql, Rho Cas, Gamma Cas, Del Cep, miu Cep, Eps Aur, Eta Gem, Zeta Gem, Betelgeuse. And also Queen ALGOL! Mircea
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