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This Item  SVBONY Telescope Filter H-Alpha 7nm 2 inches Filter Narrowband Astronomical Photographic CCD Filter Color Filter Set for Deep Sky Photography |  |  |  |  |  | |
| Price | Currently unavailable. | $139.99 | $306.00 | $159.99 | $76.99 | -34% $65.00 List: $99.00 |
| Delivery | — | Get it as soon as Monday, May 6 | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 |
| Customer Ratings | ||||||
| Sold By | — | SVBONY Direct | StarPal | SVBONY Direct | SVBONY Direct | StarPal |
| thread size | 2 inches | 1.25 inches | 48.04 millimeters | 2 inches | 2 inches | 48 millimeters |
| photo filter effect | Enhancing | Neutral Density, Ultraviolet | Enhancing | Nebula, Polarizer | Neutral Density | Ultraviolet |
| material | Aluminum, Glass | Glass | — | — | Plastic | — |
| water resistance | not water resistant | not water resistant | not water resistant | not water resistant | not water resistant | not water resistant |
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SVBONY Telescope Filter H-Alpha 7nm 2 inches Filter
SVBONY Direct
From the brand
Observation Discovery & Exploration
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We are SVBONY, a young and passionate team of astronomy and sports optics products. We start from 2014, and our team are working for R&D practical optical products for people who want to get involved in nature and space exploration. Our products include Astronomy Telescope, Astronomy Camera, Astronomy Accessories, Microscope and more.
We sincerely hope that under the influence of SVBONY, more people will fall in love with exploring the starry sky
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Product Description
H-Alpha 7nm Filter Narrowband Astronomical Photographic CCD Filter for Deep Sky
Optical high-precision double-sided polishing to ensure that the parallelism is higher than 30 "and high flatness 1 / 4λ, to ensure that does not affect the image quality of the image.
H-Alpha telescope filter
With CCD is good choice for deep sky photography & wide-field astrophotography
The H-Alpha is 656nm mainly through the high permeability of the spectrum, and 656nm spectrum of the color presented by the red-based, 300-1100nm cut-off depth to get the details of the launch nebula richer. Extremely narrow bandwidth allows only the 656nm band to pass through the filter, can effectively cut off the artificial light Na lamp and Hg lamp interference to make the transmission line through, so as to improve the nebula contrast.
Multi-layers anti-reflection coating
Precision double-sided optical coating, non-two-piece glue, effectively improve the transmittance and cut-off depth.
Thread: M48*0.75
Standard thread size, you can use it with other accessories of 2 inches.
High uniformity planetary wheel coating fixture to improve the uniformity of the filter wavelength.
Reviews with images
For Camera Use Only
First of all, this is a photographic—NOT a visual use filter. This is for camera use only. The other night, I photographed the Rosette Nebula from Bortle 5+ skies (central New Jersey). I used a 600mm scope with a .8 focal reducer, 17 exposures at 1600 ASA, at 5 minutes each. Camera used: a Canon T3I (modded). The attached picture speaks for itself. The images were simply stacked and minimally processed. I consider the results stunning—better than anything I tried before.Some caveats: this filter can be difficult to focus. You require a BRIGHT star in order to simply see anything. If you have the ability, best to use photographic focusing routines. While this will probably work with a regular DSLR, the use of an astronomically modified DSLR (i.e. wider band IR cut filter) will greatly enhance the use of this H-Alpha filter.
Top reviews from the United States
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Reviewed in the United States on February 26, 2020
First of all, this is a photographic—NOT a visual use filter. This is for camera use only. The other night, I photographed the Rosette Nebula from Bortle 5+ skies (central New Jersey). I used a 600mm scope with a .8 focal reducer, 17 exposures at 1600 ASA, at 5 minutes each. Camera used: a Canon T3I (modded). The attached picture speaks for itself. The images were simply stacked and minimally processed. I consider the results stunning—better than anything I tried before.
Some caveats: this filter can be difficult to focus. You require a BRIGHT star in order to simply see anything. If you have the ability, best to use photographic focusing routines. While this will probably work with a regular DSLR, the use of an astronomically modified DSLR (i.e. wider band IR cut filter) will greatly enhance the use of this H-Alpha filter.
Some caveats: this filter can be difficult to focus. You require a BRIGHT star in order to simply see anything. If you have the ability, best to use photographic focusing routines. While this will probably work with a regular DSLR, the use of an astronomically modified DSLR (i.e. wider band IR cut filter) will greatly enhance the use of this H-Alpha filter.
Images in this review
Reviewed in the United States on June 16, 2021
This was taken using svbony Ha, Si, and Oii filters using a redcat 51 telescope and ZWO mono camera. For the money they are actually very high quality filters. I would buy again. I will also buy more expensive tighter bandpass filters as well, so know that these are good but not your life long go to filters.
Images in this review
Reviewed in the United States on February 9, 2019
Reviewed in the United States on January 9, 2022
I purchased all four SVBONY narrow-band filters (H-alpha 7nm, S-II 7nm, O-III 7nm and H-beta 25nm) and measured their transmittance using a UV-VIS spectrophotometer. The measured results are nothing short of amazing at this price point. Just had a chance to try it out over the holiday break. I live in a coastal city where I usually need to fight the light pollution, the air moisture and atmospheric turbulence for a good night out. The first light on Rosette Nebula exceed my expectation. An amazing value!
Images in this review
Top reviews from other countries
Joel Duran
Excelente por el precio
Reviewed in Mexico on October 3, 2023
Joel Duran
Reviewed in Mexico on October 3, 2023
Images in this review
