Delos 14mm and Nagler 13mm T6
Had second light with the Delos tonight in my 110mm refractor. Since I've bought a number of eyepieces recently I was keen to try them all out, and was particularly interested to compare the Delos with my most recent arrival, a 13mm Nagler T6. I bought the Nagler from an IISer in WA, and while it was in transit I bought the Delos 14mm. Until tonight I assumed I would be selling the Nagler since they are only 1mm apart, but not so...
I haven't learned my way around the southern sky particularly well so I concentrated on the obvious showpieces - e.g. the Tarantula nebula, 47 Tuc and, later, the Orion nebula. In each case I used the Delos first since it gives the lower magnification. And each time, with these bright objects, I preferred the view with the Nagler, probably because of the extra magnification.
I did some sweeping later on and came across two fuzzy objects in the same field with the Delos. I didn't have my star charts with me and even after coming home I'm not sure what they were. However, the important thing is that the view was better with the Delos. This time the slight extra magnification with the Nagler was enough to dim the image a bit too much.
So, to my surprise, I'll be keeping the Nagler as well as the Delos. It seems that sometimes a very slight change in power, just 1mm's worth, can be the difference between a good view and a great view.
Of course the Delos is more comfortable to use with its 20mm of eye relief, and is usable with glasses, which I feel I might need in the not-too-distant future. It's also a a fair bit heavier than my other eyepieces, so occasionally balance was a little bit off.
I'm very happy with both eyepieces.
Morton
Last edited by MortonH; 13-11-2012 at 01:39 AM.
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