jetstream Posted February 16, 2017 Share Posted February 16, 2017 (edited) A brief 2 hour spell of real clarity had me running to get the scope, a 200mm f3.8 tonight. 21.6 mag/vg trans were the conditions. A while back I purchased a 1.25" DGM NPB filter as a gift for my grand daughter but I needed to check its performance before giving it to her. Tonight 2, 25mm TV plossls were enlisted to compare the Lumi UHC to the NPB. I used 2 brighter showcase nebula to try first, NGC 2174 and the Rosette in Gemini. Both filters excelled on these objects with structure showing in the Rosette very well and The Monkey Head showed its "notch" for lack of a better word, the Lumi could be just ahead on this one.(NGC 2174) Up in Auriga a different leader emerged...the NPB excelled on both the Flaming Star and in particular on IC410, besting the Lumi. One little neb that I like is the "Owl" and using the NPB with a 12.5mm widefield I pulled the eyes out of the Owl On to the show case M42...Both worked extremely well but the NPB pulled ahead on M43 and also the Running Man neb, both filters showed the lower loop under M42. I feel that the NPB is at least the equal to my UHC which is high praise indeed and perhaps it is better. I can now wrap the NPB up and deliver this birthday present (belated) to my 8 yr old grand daughter. ps I have a feeling her Heritage 130P dob will be giving some pretty good reports... Edited February 16, 2017 by jetstream 3 Link to comment Share on other sites More sharing options...
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