What has happened with the Explore Scientific love?

Discussion of optical systems and their characteristics.
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Don Pensack United States of America
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Re: What has happened with the Explore Scientific love?

#41

Post by Don Pensack »


Mike Q wrote: Thu Oct 19, 2023 8:16 pm I was wondering about a couple of their eyepieces. Seems like they have a 4.5 and a 6.7 82 degree eyepieces. Anyone have experience with them in a F4.4 dob? Just curious as to how they do
The 6.7mm is not bad. It just has a short eye relief.
The 4.5mm is pretty bad, with serious chromatic aberration and other problems.
In that range, where ES is concerned, look for the older 4.7mm, which was far better.
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Re: What has happened with the Explore Scientific love?

#42

Post by Mike Q »


Don Pensack wrote: Fri Dec 29, 2023 7:55 pm
Mike Q wrote: Thu Oct 19, 2023 8:16 pm I was wondering about a couple of their eyepieces. Seems like they have a 4.5 and a 6.7 82 degree eyepieces. Anyone have experience with them in a F4.4 dob? Just curious as to how they do
The 6.7mm is not bad. It just has a short eye relief.
The 4.5mm is pretty bad, with serious chromatic aberration and other problems.
In that range, where ES is concerned, look for the older 4.7mm, which was far better.
I looked thru a 4.5 within the last six months and I didnt notice any bad CA. The image seemed to be pretty good. Makes me wonder if they fixed something. We will find out when i get a break in the clouds that seem to be covering ohio at this time.
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