1.25" Oxygen III Line band filter

by Celestron Print

What would you like to print?
(Reviews and Documents/Videos will not be printed)

Basic Product Information
Full Description
Tech Details
Supplied Accessories
Recommended Accessories
Images

Print
More product information
This new Celestron 1.25” Oxygen III light pollution line filter isolates the two glowing emission lines of doubly-ionized oxygen (at 4959 Ångstroms and 5007 Ångstroms) that are emitted by planetary and emission nebulas, while blocking the rest of the overall spectrum of light. The result is an extremely high contrast between the black sky background and the faint photons of glowing ionized oxygen.

It yields detailed views of the billowing tapestry of the Veil, Ring, Crescent, and Orion nebulas, among others. Its very narrow passband gives two to three times the contrast of a narrowband filter for observing brighter nebulas like M17 (the Swan) and M27 (the Dumbbell) from heavily light-polluted city locations. It is excellent for visually observing very faint planetary and gaseous nebulas (such as M76, the Little Dumbbell, and Barnard’s Loop in Orion) that are normally invisible without a filter from mildly to moderately light-polluted sites. It is not designed for astrophotography or for observing reflection nebulas.

The filter has an ultra-hard vacuum-deposited multilayer dielectric coating that has been carefully designed to block all of the visual spectrum ranging from 400 to 700 nm, except for the narrow Oxygen III passband. This eliminates the unnatural colored halos surrounding bright stars that are often common with O III filters with less sophisticated coating technology. Ion beam hardened coatings provide excellent durability and resistance to scratching.

Comes in a protective clear plastic case. A ribbed rim makes it easy to thread in and remove the filter from an eyepiece in cold weather when wearing gloves.

Enter your telescope focal ratio in the formula box to the right to see what focal length eyepieces will work best with this filter.

Min City Exit Pupil:
2mm
Max City Exit Pupil:
5mm
Min Dark Site Exit Pupil:
7mm
Max Dark Site Exit Pupil:
3mm
Size:
1.25"
Color:
Color of the given filter.
0 - Not a color filter
Warranty:
2 years
There are currently no Cloudy Nights reviews associated with this product

User Ratings/Reviews from our Customers (www.astronomics.com)
Overall Product Rating: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics(4.00)   # of Ratings: 1   (Only registered customers can rate)

(Only registered customers can rate)

5 - Great (0.00%) (0 users)
4 - Good (100.00%) (1 user)
3 - OK (0.00%) (0 users)
2 - Bad (0.00%) (0 users)
1 - Very Bad (0.00%) (0 users)
0% 50% 100%
astronomics image

Sort Ratings: 

  Show these ratings: ALLGreatGoodOKBadVery Bad

loading request
Showing comments 1-1 of 1
1. James on 5/1/2013, said: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics
This filter has a very specialized use, but if you do most of your observing in moderately to badly light polluted conditions, it will show surprisingly detailed (though dim) images of planetaries and emission nebulae - stuff you won't be able to see otherwise. I get decent results with low power eyepieces on a Meade 10" f10 SCT.
Was this comment helpful? Yes No   (0 people found this comment helpful, 0 did not)
Showing comments 1-1 of 1
We haven't recommended any accessories for this product quite yet... check back soon or call one of our experts (1-405-364-0858).
This product does not have supplied accessories... or supplied accessories have not been assigned.
Documents
No documents have been associated with this product.
Videos
No videos have been associated with this product.
Helpful Formulas
Light Pollution Filter Formula
Enter your telescope focal ratio in the formula box below to see what focal length eyepieces will work best with this filter.
Enter Your Telescope Information:
Your Telescope Focal Ratio: f/
  
Results
Celestron - 1.25" Oxygen III Line band filter

Click icon(s) below & hover image above for zoom

Celestron - 1.25" Oxygen III Line band filter
 AstronomicsAstronomicsAstronomicsAstronomicsAstronomics (Average: 4.00 | Users: 1)  Only registered users can submit ratings - Register Here
Our Product #: COXY1
Manufacturer Product #: 93623
Price: $77.50  Ground shipping for this item is $8.95 - Click for more info
By adding 1 of these items to your cart your order total will be less than $100, and will ship within the 48 contiguous United States for $8.95. Add $22.50 to your order, however, and you qualify for free ground shipping (heavy items with fixed shipping, such as counterweights, excluded).
MSRP: $106.95
Quantity:   

 E-mail this product to a friend E-mail this product to a friend

Your Email:  
Your Friend's Email:  
Confirm Friend's Email:  

Comments:
  200 characters or less
 

An email containing a link to this product has been sent to the email address you provided.

Clear Skies!
Astronomics

 Have a question? Do you have a question about this product?
 Found a better price? Found a lower price? Click to let us know... or call 800-422-7876 before you buy.

If you’ve found a lower delivered price on this product, let us know about it below. We’ll do our best to meet or beat that price and will get back to you within one business day with our best offer. Thanks for giving us the opportunity to give you a better deal.

Your Name:  
Price:  
From Who:  
Context:  Magazine AdOnline
Website Address:  
Cut and paste the web address into the box above
Your Email:  
Confirm Email:  


We’ll do our best to meet or beat that price and will get back to you within one business day with our best offer. Thanks for giving us the opportunity to give you a better deal.

Clear skies,
Astronomics


This Celestron Oxygen III light pollution filter has a very narrow passband for very high contrast on emission nebulas, making it a good choice for city and suburban observing . . .





. . . our 34th year