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Hi Mental,
Most of that makes sense. I'm still getting my head around the way optics work.
1. I get what you mean about the longer focal lengths and the AFOV and wasn't expecting to see any more sky than I get with the 42mm SV. The view through either of the SV's is big enough. Do you think the TV 55mm plossl would yield noticeably better views due to the better quality glass?
2. Point taken on the "dark sky only" usage. I guess that's where my question about the 55mm sprouted from.
If it's only use is to be "as is" on the lucky occasions I get to be at a dark site, I wonder why it seems to be so highly recommended?
Is it really worth it for those rare occasions( subjective, I know)?
Does the darkened sky background possible with a higher magnification and larger AFOV have any negative effect on the view of some objects?
3. Those eye relief figures are definitely up there. Does anyone know if the eyecup is big enough on the 55mm TV?
You've given me some good points to ponder Alex.
The focal reducer was really only ever bought for the camera so I never bothered looking up the affect it would have on the AFOV through an eyepiece. My brain is going to need a bit of time out to reshuffle what I've learned so far.
At this stage I'm happy to save up my pennies for something that will be more useful with my equipment. I was really hoping to be able to limit my eyepieces to 2x you beauties and the 2x powermate. From what I've read this is not unreasonable.
That doesn't include the desire to constantly chase the next best thing.
Thanks for the food for thought.
PS. The eye opener is just a fitting that goes on the back of 10"+ Scopes to give you a 2" opening to work with. It's a little bit bigger than the standard fitting so you can squeeze out a little more FOV. Supposedly they can also add unwanted light in certain situation.
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