Region of the Copernicus crater. November 8, 2019, 21:39
Equipment:
-Celestron NexStar 8 SE
-filters Meade R\G\B
-camera QHY5III178m (3056х2048@43fps)
Stacking 100 frames from 2624 в Autostakkert per channel.
Location: Russia, Anapa, backyard.
This is the first more or less adequate result with the Optolong L-eNhance 1.25 “filter. The filter cuts off most of the city light pollution, but at the same time passes the H-alpha, OIII and H-beta lines. Ghosting appears around bright stars, but personally they don’t bother me, I will continue testing the filter.
NGC 281 Pac-Man nebula. December 2, 2019
Equimpent
-Samyang 135mm f/2.0 ED UMC Canon EF lens
–Optolong L-eNhance 1.25″ filter
–ASI ZWO 183MC camera
-finder-guider 50 mm + QHY5III178m camera
-Sky-Watcher AZ-GTi mount.
30 frames per 120 s.
Calibration with PIPP, stacking with Fitswork.
Fullsize.
Location: Russia, Anapa, backyard.
It is interesting to compare the result with another picture taken about a year ago with a monochrome camera QHY5III178m and a 12 nm H-alpha filter:
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Every year, the illumination from cities is becoming stronger and stronger, creating difficult conditions for shooting deepsky objects. However, progress does not stand still – various filters have appeared that make it possible to cut off spurious light. Narrow-band filters that allow only a specific wavelength (hydrogen H-alpha, oxygen OIII, sulfur SII) have been used by astrophotographers for a very long time and make it possible to capture gas nebulae even under the conditions of strongest exposure. The hero of today’s review is the Optolong L-eNhance filter, passing only the H-alpha, OIII and H-beta lines. In combination with a color camera, it allows you to get a full-color image at once with one frame. Optolong L-eNhance will be of interest primarily to owners of color cameras and aperture telescopes. I immediately warn that it is not suitable for shooting objects of stellar nature (galaxies, star clusters, dust nebulae).
Filter bandwidth declared by the manufacturer
Packaging, appearance
The filter is delivered in a cardboard box. Inside it is a transparent plastic box for storage and transportation. Filter weight 5.4 g, thread diameter 28.5 mm, filter thickness with thread 7 mm, without thread 5 mm, light diameter at the inlet and outlet – 26 mm.
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