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DGM NPB vs LUMICON UHC

Posted by Mark Gemmell   12/05/2022 01:43AM

DGM NPB vs LUMICON UHC

DGM NPB vs LUMICON UHC

The DGM NPB is from 2015. The Lumicon UHC is from anywhere between 2005-2012. I compared both in dark skies and from an urban setting. Both are VERY CLOSE in performance, giving the slight "nod" to the Lumicon UHC.

M-27, Dumbell Nebula, (Vulpecula)

A bit brighter in the Lumicon UHC, but still very close in performance. I used a 12.5mm Baader Morpheus for this test. (93x and a 2.7mm exit pupil). The Dumbell shape was very obvious and the outer "tendrils" were there as well. Without the filters, it just looks like a fuzzy-looking "rectangle".

The Veil, (Both sides), (Cygnus)

To my eye, the Lumicon UHC was the clear winner here. Both sides of The Veil had sharper edges and the nebula itself was brighter in the Lumicon UHC. The DGM NPB was also good, but the outer edges looked "fuzzier" in the NPB. I am well aware that an O-III filter is best for The Veil, but the Lumicon UHC is also very good. I used my 21mm Baader Hyperion + 14mm fine tuning ring for this test. (61x and a 4.1mm exit pupil).

M-42, Orion Nebula, (Orion)

Tested from my backyard, (urban setting). The Lumicon UHC was slightly better. I could see the top "tendril" somewhat brighter in the Lumicon UHC compared to the DGM NPB. The central "core" was also a bit brighter using the Lumicon UHC as well. However, M-43, (aka "the comma"), was a bit brighter in the DGM NPB. I was able test the DGM NPB in darker skies on M-42, and it was extremely good. I am looking forward to trying out the Lumicon UHC on M-42 as soon as I can in darker skies, and I know it will be really, really good ! I used my 21mm Baader Hyperion + 14mm fine tuning ring for this test. (61x and a 4.1mm exit pupil).

NGC-7293, Helix Nebula, (Aquarius)

Both filters were tested in darker skies on the Helix. In my audio reports, both filters were a tie. Both showed the Helix quite bright, and I found they were very close to the Lumicon O-III I used to own. In the O-III, the Helix is a tad brighter, but I really like the Lumicon UHC and the DGM NPB on this objectm more, because the field is not too dark as it is in the O-III. I used my 21mm Baader Hyperion + 14mm fine tuning ring for this test. (61x and a 4.1mm exit pupil).

M-76 , "LIttle Dumbell", (Perseus)

Both filters were really nice on this object. It was only 1/3rd as bright without the filters. I tried both filters using a 9mm Baader Morpheus, (133x and a 1.9mm exit pupil, rounded off to 2mm). I also tried using a 6.5mm Baader Morpheus with both filters. The field gets rather dark here and you MUST be fully dark adapted in order to see the field. (184x and the exit pupil is 1.38mm). The nebula is a bit brighter at this magnification & exit pupil with the filters, but I preferred it without the filters because the field is so dark anyways.

M-57, The Ring Nebula, (Lyra)

Both filters were good on this object. I tried the 9mm Baader Morpheus and the 6.5mm Baader Morpheus. Same results as M-76 in Perseus.

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A 10" F/4.7 Orion Intelliscope was used for all tests. The skies were pretty good about 30 min away from city lights. The Milky Way on this night was just detectable overhead. It was a bit windy and I had to set up right next to my SUV to block the wind. Hey, at least it was dry, lol.

I hope this helps all of you astronomers out there! Happy viewing to all!

Regards,

Mark