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Thousand Oaks - LP-1 broadband for 1.25" eyepieces
| Our Product #: LP11 | | Thousand Oaks #: LP-1 1.25" |
| In Stock: | Usually ships within one business day. |
| This 1.25” filter has a moderately wide 560 Ångstrom passband for visual use on emission nebulas in slight to moderately light polluted areas. It typically has a peak transmission approaching 96% at the visually important emission lines of hydrogen-beta at 4861Å and doubly ionized oxygen at 4959Å. Transmission at the 5007Å doubly ionized oxygen line is typically approaches the somewhat lower (but . . .
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Thousand Oaks - LP-1 broadband for 2" eyepieces
| Our Product #: LP12 | | Thousand Oaks #: LP-1 2" |
| In Stock: | Usually ships within one business day. |
| This 48mm filter for 2” eyepieces has a moderately wide 560 Ångstrom passband for use in slight to moderately light polluted areas. This filter is primarily for visual use on emission nebulas with medium to long focal length 2” eyepieces. It typically has a peak transmission approaching 96% at the visually important emission lines of hydrogen-beta at 4861Å and doubly ionized oxygen at 4959Å and ty . . .
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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 . . .
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Thousand Oaks - LP-2 narrowband for 2" eyepieces
| Our Product #: LP22 | | Thousand Oaks #: LP-2 2" |
| In Stock: | Usually ships within one business day. |
| 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 . . . ]
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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
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