Astronomik CLS Clip-Filter Nikon XL (For Enhanced Spectrum Cameras)

$189.95
Unit price per

Delivery: Ships in 5 to 10 business days after the date of purchase.

Clip-Filter system for Nikon Full Frame DSLR cameras

Do you own a Nikon Full Frame DSLR digital camera for astro-imaging? Then you have surely encountered the following problems:

Large filters for large camera lens objectives are very expensive
If you are using an Off-Axis Guider stars will be dimmed on your autoguiding camera when a 2" round mounted filter is threaded to a corrector being ahead of the reflecting prism from the light path.
For very fast (low f/ number) telescopes like the Vixen R200SS or the Takahashi “Epsilon” astrograph, a filter drawer or a filter wheel cannot be used since the distance to the corrector lenses would be changed.
With long exposure times your camera’s sensor chip is exposed to more dust

With the Astronomik Clip-Filter System you can take care of all of these problems at once!

The filters are held in place save and secure with no stress to the high quality glass. The Clip-Filter are designed and optimized to be used with normal lenses and with telescopes as well.
Due to the very tight Nikon bayonet, the clip-filters add a minimal obstruction at the edge of the field.

Description
Specifications
Compatibility
Reviews

Description

Astronomik CLS Clip-Filter Nikon XL Full Frame (For Enhanced Spectrum Modified Cameras)

The Astronomik CLS is also a budget filter for visual observation, Black & White photography and CCD photographs of nebulae, galaxies and star clusters with astronomical instruments of any size.

The Astronomik CLS blocks the light of the spectral lines of mercury and sodium-vapor lamps and lets the largest part of the visible light and H-alpha emissions pass. All the important emission lines, as well as the spectral region that the very well dark adapted eye can see, can pass through the filter.

Main use

The filters are optimized for use with aperture ratios from 1:3 to 1:15. Transmission losses and chromatic distortions, which are problems with other filters, only appear with Astronomik filters when extremely bright aperture ratios of 1:2 and more are used. The CLS filter is suitable for use with telescopes of all aperture sizes.

Important: Full Spectrum modified cameras will need an additional IR-block-filter.

Watch the following video to see how easy the clip filters can be used:

California Residents: Please check Proposition 65 Warning Website about significant exposures to chemicals that cause cancer, birth defects or other reproductive harm. https://www.p65warnings.ca.gov/

Specifications

Technical Data

92% transmission at 486nm (H-beta)
92% transmission at 496nm (OIII)
92% transmission at 501nm (OIII)
97% transmission at 656nm (H alpha)
pass from 450 to 540nm and beyond 650nm
Parfocal with other Astronomik filters
Glass thickness: 1mm
Completely resistant against high humidity, scratches and aging effects
Diffraction limited, the filter will not reduce the optical performance of your telescope!
Astronomik filters are delivered in a high-quality, long lasting, filter box
Since 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past

Compatibility

The Nikon XL-Clip Filter have been successfully tested with the D750, D780, D800, D810 and the D850.
Since the latest firmware-update of the D850 Clip-filters can't be used with D850 bodies anymore. -We´re sorry for this, but firmware upgrades from Nikon are out of our control. For the D780, you can only use manual focus lenses or a T-adapter (with a telescope). With all lenses with electric contacts you will get an error message and the camera will not work. (Workaround for this: When using lenses with electric contacts on the D780 + D850 you can apply some tape over the lens contacts and the camera will work fine with the XL-Clip Filter installed.)
Other bodies have not been tested yet.
The Nikon XL-Clip will not work with cameras with APS-C sized sensors and not with the new mirrorless body. Clip-Filter for the APS-C sized models will be released in the near future.

Reviews