Quote:
Originally Posted by Snorbak
To all who replied, thankyou.
& yes the thread was not in the right area, its my 1st post so you will need to forgive my error 
It would seem I need to bite the bullet, so to speak & buy Televue or similar, hence my questioning the ES 82 degree range & EP weight needs to be considered.
My scope is a 10" truss dob @ F4.7 so from what I understand based on my limited knowledge, as a good starting point, I will need 1 low power EP of approx 26-28mm, 1 mid power EP around 15mm & 1 EP of approx 8mm.
Please correct me if I am wrong.
Having looked at the televue EP's I am confused as to what range. Given the price tag of quality EP's I dont want to buy & be dissapointed.
I dont mind spending the money for quality, but there are limits.
Regards |
~8mm-~15mm-~28mm is a good spread of magnifications. Although the 28mm is a little bit of polava as there arn't actually too many wide field eyepieces that are exactly 28 mm. William Optics 28mm UWAN comes to mind. I think theres a nagler 26mm and a panoptic 27mm.
If you want to know about televue products more check out
http://www.televue.com/engine/TV3_page.asp?id=2 and do some reading of the ranges available. For televue, your premium deep sky viewing is the Panoptic - 68 degrees, Nagler - 82 degrees and Ethos 100 degrees ranges. Theres a big difference visually between the fields of view.
Panoptic's are spread between about ~16mm -42mm. They really excel in SCT due to their long focal lengths, exit puplies and the need for a very low powered eyepiece to get a large field of view. The Nagler range is the most comprehensive. It starts as low as 2mm and goes all the way to the mighty 31t5mm. If your planning on Naglers, have a read about them because the current range stretches across about 3 generations of eyepiece design, and not all of those designs may be to your liking. What comes to mind is the eye relief fluxtuations per design. Also the inbuilt 1.25 incha nd 2 inch adaptors. The ethos range stretches from 3.7mm (110 degrees about +$900) to 21mm. The ethos range is considered by most to be the best eyepieces in the world. But, a few pentax fans will argue that. Both the televue ethos and pentax xw series are extremely expensive. Some of them cost more then 8" and 10" telescopes - even some 12" telescopes as well. Personally Id rather use that money to buy an IPad2 and load up star charts and astronomy apps and take that into the field to help me find stuff instead
If your willing to drop the cash for a Televue product you really should goto a star party or a local observing night and check out the fields of view of certain eyepieces in different telescopes to get a feel about what your comfortable viewing.