Askar ColourMagic 2" Super D Filter Package

£620.00

(1 Review)

✓ 2 year warranty

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About this product

Model: askar_duo_6nm_d1_d2
Part Number: ASK2DNHOSOD

Two Colour Magic filters with high Ha/OIII and OIII/SII transmission - perfect for narrowband imaging with colour cameras.

Askar's newly launched ColourMagic Super D 2" Duo-narrowband filters are specifically designed for deep-sky imaging.

As the name suggests, the Super D filters have "Super" halo control.

During the filter research and development, Askar made a 'special design optimisation' for Super D filters.

The filters provide one bandwidth at 6nm and the other outside 6nm.

Specifications D2

6nm Duo-narrowband Filter (OIII & SII) 2”
FWHM: 6nm
CWL: 500.7nm & 671nm
Peak transmittance：90%
Thickness：1.85 ± 0.05mm
Barrier property：≥OD5 @ 200-1100nm
Surface finish：60/40
Parallelism：30”

Further Notes

Users will have remarkable results When shooting data through dual-band filters (D1 and D2) and a colour camera.

Usually, in astrophotography, the Hα signal-to-noise ratio is stronger, while the OIII is relatively weak. As our two duo-narrowband filters are Hα+OIII and SII+OIII, the combination can balance the signal-to-noise ratio of each channel when shooting data. After image processing, it can achieve an excellent result, almost as good as shooting with a combination of three narrowband filters and a mono camera.

Here is a link detailing how to process D1 and D2 Data in Pixinsight.

Customer reviews

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Great results for expensive glass!

06 August 2024 | Steven

I've only had the opportunity to use the D1 and D2 Askar Colour magic filters thus far, but the result pf imaging the Cygnus Wall have been positive. Time will tell after the weather finally improves and I can get some telescope time in to fully test the filters. The price for both of the D1 and D2 filters place these in the premium filter category. I hope that my investment is rewarded! Thanks to FLO for quick delivery. Clear skies.