SKU:97425863152
Optolong SII 6.5nm Narrowband Filter 1.25" Mounted (OPT-SII-65NM-1.25)
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
Description
Optolong SII 6.5nm Narrowband Filter 1.25" Mounted (OPT-SII-65NM-1.25)Optolong improved narrowband SII6. 5nm filter (Sulfur II for CCD) is designed for nebula observation allowing 6. 5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapour, and both high and low pressure sodium vapour lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.
3" 61EDPH f/4
Sky-Watcher's premiere line of Maksutov-Cassegrains
Aluminum optical tube with tube vents featuring an integrated 50-mesh filter allows hot air to be released from behind the primary mirror
experiment with wide-field deep sky astroimaging by replacing the telescope's secondary mirror with a DSLR or astronomical CCD camera with a Fastar/HyperStar lens assembly
It has been recognized by astronomy enthusiasts around the world and has become a must-have for anyone using an equatorial mount for visual use or for imaging
7nm and it is a blue-green coloured filter
93 arc seconds Resolution (Dawes): 0
and very versatile 2X Barlow doubles the magnification of any 1
The extender is designed to help you to reach 55mm or any other back focus distance
The focuser is tough and solid
Perfect companion to single axis mounts: When used with single (RA-only) axis mount
4" Dual Speed R&P OTA Length (Retract/Ext
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Your Optolong SII 6.5nm Narrowband Filter 1.25" Mounted (OPT-SII-65NM-1.25) orders ship within 1-2 business days.
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- Fast: 2-3 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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