Goods can be purchased
- directly from our offices
- online
- on takealot.com
- or loot.co.za
First floor
44 The Avenue, The Gardens, Johannesburg, South Africa
Office Hours
Monday to Friday
9 a.m. to 5 p.m.
Saturday and Sunday
Closed
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The Askar Color Magic Super Duo Narrowband Filters combine their "Super" halo control technology, high transmittance, and narrowband passes with an interesting approach to obtaining SHO data from one-shot color cameras. This D1 filter from their Super D series captures Ha and OIII, allowing you to cut through light pollution and reveal the stunning detail of the deep-sky objects shrouded behind!
Askar's imaging filters are excellent standalone narrowband duo band filters in their own right, excelling at capturing nebulae with their 8.5nm band passes for Ha on the D1 and SII on the D2 and 6.5nm for OIII for both; however the Super D series is especially unique in its approach to providing users with SHO (SII, Ha, OIII) image capability. Typically capturing an image like this entails using three filters, one dedicated to each of the SHO components, and a monochrome camera. This works incredibly well, but does mean you need to purchase, integrate, and split your available imaging time up between, these three filters. Askar provides a way around this by leveraging the color information that one-shot-color cameras capture in a clever way - by creating one filter that captures OIII and Ha, and one the captures OIII and SII. As the two wavelengths of each filter are relatively far apart, it is possible to separate these out of one-shot-color exposures and construct a full SHO image with information collected from both the Super D1 and D2 filter! Note: This listing is for the Super D1 OIII and Ha 2" filter only. The Super D1 and D2 narrowband filters are available in a bundle for those looking to take advantage of this specialized SHO approach!
The 2" Askar Color Magic Super D1 Duo Narrowband Filter has more to offer than just its novel application in SHO imaging - it also integrates narrowband coatings, high transmittance, and Super halo control to make a quality filter for duo-band or SHO imaging.
Narrowband Imaging
The Askar Color Magic Super D1 Duo Narrowband Filter features 6.5nm ± 0.5nm OIII and 8.5nm ± 0.5nm Ha band passes targeting 500.7nm and 656.3nm respectively, with a peak transmittance of 85%. This provides an excellent isolation of the OIII and Ha wavelengths, blocking light pollution and revealing fine detail and contrast in deep sky targets. With this filtering profile, the D1 Color Magic Super D1 Duo Narrowband Filter is best suited for nebulae imaging.
Wide Compatability
This filter is mounted in a 2" threaded filter cell for wide compatibility. The 2" mounted cell design is one of the most common for imaging filters as it can provide up to full-frame sensor coverage, and as a result this filter can be integrated in a large array of filter drawers, filter wheels, and threaded filter cells that are on the market today!
Physical Properties
The Askar Color Magic Super D1 Duo Narrowband Filter features a 60/40 surface finish, with the filter coming in at a thickness of 1.85 +/- 0.05mm. This filter is designed for a parallelism value of 30", and has a listed barrier property of ≥OD5 @ 200-1100nm.
Established in 1991, GIT has prided itself on providing our customers with personalised service and support for over 30 years.
We import and supply a Range of Astrophotographic, Optical, an d Audio products to our customers. All products are supported locally by ourselves.
Not sure about buying online? Feel free to set up a time to meet at our offices in Norwood Johannesburg where we can discuss and assist with your buying decision.
Thank you Laurence, the unit works very well with the speaker arrangement I have and has a clear sound, it has brought new life to these since my amp blew many years ago. Vaughan
Online-sales
Graphic Image Technologies (Pty) Ltd
GIT was established in 1991. We provide solutions to the broadcast and security markets.
We offer a range of quality Astrophotography, Optics and Audio Amplifier solutions. Please feel free to contact us should you have any questions.
More information is available on our main website at: https://www.git.co.za
Goods can be purchased
- directly from our offices
- online
- on takealot.com
- or loot.co.za
Office Hours
Monday to Friday
9 a.m. to 5 p.m.
Saturday and Sunday
Closed