Announcements and News
Cloudy Nights Announcements
Discussion of CN Articles, Reviews, and Reports
General Observing and Astronomy
ATM, Optics and DIY Forum
Cats & Casses
Video and Electronically Assisted Astronomy
Astrophotography and Sketching
Beginning and Intermediate Imaging
DSLR & Digital Camera Astro Imaging & Processing
CCD Imaging & Processing
Solar System Imaging & Processing
Astro Imaging/Sketching Contest
Solar System Observing
Deep Sky Observing
Double Star Observing
Solar Observing and Imaging
Variable Star Observing and Radio Astronomy
Telescope Specific Forums
Celestron NexStar, NexStar GPS, CPC
Astronomy Shows & Conferences
Astro Art, Websites & Other Media
Astronomy Clubs and Star Parties
Astronomy Software & Computers
Books, Star Charts & Stellar Media
Science! Astronomy & Space Exploration, and Others
The Off Topic Observatory
Off Topic Observatory Games
Cloudy Days & Microscopes
Cameras & Photography
Swap and Shop
S&S Misc Astro
S&S Information for New Members
CN Feedback and Vendor Announcements
Vendor and Group Announcements
International Year of Astronomy 2009 - Forums are now closed.
IYA Archive Info
Articles and Columns
/ 25x100mm Celestron binos
25x100mm Celestron binos
September 14, 2003 3:53 PM
I talked with a Celestron Tech on friday, as I had an intrest in their 25x100mm binos. My main question was on the coatings. The Tech had stated that the optics now are Broadband coated and that the newer 2003 models are much better than the first poduction runs in optical and build quality. So, yesterday I went to my friends telescope store here in Upstate NY (Jhonson camera and telescope)and bought one. The outer edge is soft, I would guess the last 10% of the field of view, and the false color is very slight in day time use. I also got to see a pair of their first run, and did a side by side comparison. The newer one does have better edge correction, and much less false color in day time use.
At no time did have any problems with using the binos, and the image sharpness and contrast was very good. I could look through the bino for as long as I wanted to with no eye-strain
at all. Over all, I like these.
September 14, 2003 5:12 PM
Don, First, congrads on your purchase of the Celestron 25x100 binos. Please share your night time viewing experiences once you have a chance for clear skies. I would be interested in any false color on bright objects. Nick
September 14, 2003 6:07 PM
I'm interested as well. What are you using as a mount for them?
September 14, 2003 6:14 PM
It looks as though I'll have a good chance tonight. I'll write up a report. I have been into astonomy for 35 years and this is my first set of big bino's. For the last ten years I have been using binoviewers with large scopes, and these 100mm binos will be my grab and go setup when I go traveling.
September 15, 2003 1:15 AM
I'm using a mount from a company here in the USA. They design the mounts and it looks as though they have Bogen make them. All the Bogen heads and legs will fit the mount. The companys name is JTL. I'm using their big heavy duty mount, and the 100mm binos gives the mount no problem at all.
September 15, 2003 7:44 PM
These 100mm Celestron bino’s have a good solid build. Focusing of each eyepiece was smooth with no stiffness. I will say that this bino is a very good deep sky observing tool. I could make out the Swan nebula and its ghostly figure surrounded by a nice black background. M22 had a mottled look, and it was very easy to see that it was a globular cluster even though there was no way of resolving it at 25x. When observing M8 some very faint nebula was seen, and the open cluster was a nice pinpoint of light. M13 was very bright and at times I wished that this bino could have had more power, due to the image sharpness that I was seeing. Vega was a sharp pinpoint with very little false color. I had to look for it most of the time on bright stars, as it was not that noticeable. I had no eyestrain, and could look at objects for as long as I wanted to.
Now for the bad news.
These bino’s are not for observing the Moon, as there is way too much false color. When viewing Mars, there was way too much ghosting, and false color. However, for deep sky objects, these bino’s are a good buy. They have good optics, and will give you very good sharp images of deep sky objects. 90% of the viewable is nice and sharp, with the outer 10% being soft.
I will keep these 25x100mm bino’s for deep sky observing of open clusters, large star fields and bright nebulas.
September 16, 2003 9:53 PM
Thanks for the summary on DSO and lunar/Mars viewing. That pretty much answered my question. No doubt that binos are quick and easy to satisfy the desire to go out and take a look around the skies without the hassle encountered with a scope of any size.
Thanks again, Nick
/ 25x100mm Celestron binos
Back To Top
Like This Topic
Blue & Grey
Remove This Ad
CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.
I don't want no stinking ads, but I want to help Cloudy Nights!!!!