|
|
x
 |
|
Thousand Oaks - LP-2 narrowband for 1.25" eyepieces
| Our Product #: LP21 | | Thousand Oaks #: LP-2 1.25" |
| Back-Ordered: | Temporarily out of stock; will charge and ship when available. |
| This 1.25” narrowband filter has a 280 Ångstrom passband for visually observing emission nebulas from heavily light-polluted areas. The filter has excellent transmission (generally well in excess of 95-96%) at all the visually important emission lines of hydrogen-beta at 4861Å and doubly ionized oxygen at 4959Å and 5007Å. This combines with the narrow passband to make emission nebulas stand out br . . .
[ More details . . . ]
|
| |
| |
|
|
| x
|
|
Thousand Oaks - LP-2 narrowband for 2" eyepieces
| Our Product #: LP22 | | Thousand Oaks #: LP-2 2" |
| Back-Ordered: | Temporarily out of stock; will charge and ship when available. |
| This 48mm narrowband filter has a 280 Ångstrom passband for visually observing emission nebulas from heavily light-polluted areas using medium and long focal length 2” eyepieces. The filter has excellent transmission (generally well in excess of 95-96%) at all the visually important emission lines of hydrogen-beta at 4861Å and doubly ionized oxygen at 4959Å and 5007Å. This combines with the narrow . . .
[ More details . . . ]
|
| |
| |
|
|
| x
|
|
Lumicon - 48mm UHC narrowband filter for 2" eyepiece
| Our Product #: UHC48 | | Lumicon #: LF3030 |
| Back-Ordered: | Temporarily out of stock; will charge and ship when available. |
| This 48mm UHC (Ultra High Contrast) filter for medium to long focal length 2” eyepieces has a narrow 240 Ångstrom passband for visually observing emission nebulas from badly light-polluted areas. The filter has excellent transmission at the visually important emission lines of hydrogen-beta at 4861Å and doubly ionized oxygen at 4959Å and 5007Å, which combines with the narrow passband to make emiss . . .
[ More details . . . ]
|
| |
| |
|
|
| x
|
|
Lumicon - UHC narrowband filter for Schmidt-Cassegrain visual backs
| Our Product #: UHCVB | | Lumicon #: LF3035 |
| Back-Ordered: | Temporarily out of stock; will charge and ship when available. |
| This narrow 240 Ångstrom passband UHC (Ultra High Contrast) filter threads onto the 2” rear cell of 5” and larger Celestron Schmidt-Cassegrain telescopes and 7” and larger Meade Schmidt- and Maksutov-Cassegrains. It duplicates the 2” rear cell threads of those telescopes, allowing all visual accessories to be attached securely to the filter instead of the scope. It allows eyepieces to be changed q . . .
[ More details . . . ]
|
| |
| |
|
|
|
Home | How to pick a telescope | Telescopes | Accessories | New Products | Used & Demo / Special Sales | Binoculars & Spotting Scopes |
Link Support
Terms of Sale | PRIVACY POLICY 7/1/2004 | Fine Print
Toll-Free Telephone Astronomics: 800-422-7876; Christophers, Ltd.: 800-356-6603
Alternate Telephone: 405-364-0858 24 Hour Fax Line: 405-447-3337
Telephone Hours: Monday 8 AM - 6 PM CST
Tuesday-Friday 8 AM - 8 PM CST
Saturday Noon - 5 PM CST
Store Hours: Monday-Friday 9 AM - 5 PM CST
Saturday Noon - 5 PM CST
Astronomics / Christophers, Ltd.
680 S.W. 24th Ave.
Norman, OK, 73069
© 2012 by Ad-Libs Advertising, Inc. All rights reserved
|
Printer friendly version
Email page link to a friend
