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4mm blur

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12 years 7 months ago #90589 by dave_lillis
Replied by dave_lillis on topic Re: 4mm blur

John_Walshe wrote: Am I the problem - expecting too much :whistle:

John

Yip, absolutely, I use a 12" sct and a 20" dob and would not use any 4mm eyepiece on either of them.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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12 years 7 months ago #90593 by John_Walshe
Replied by John_Walshe on topic Re: 4mm blur
Hi Guys,
Thanks for that information - 'tis all a learning curve.

That 4mm lense could see itself reincarnated shortly as part of a laser collimator! much better use than a paper weight - it is so light it'd blow away :laugh:

It would make you wonder why suppliers like Meade would even go to the bother of making them at all when they know they are useless. I suppose they are selling on magnification strengths.

Talk again soon, season is just starting and lots of questions in the offing :)

John

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12 years 7 months ago #90594 by Seanie_Morris
Replied by Seanie_Morris on topic Re: 4mm blur

John_Walshe wrote: Talk again soon, season is just starting and lots of questions in the offing :)


That's what this website and its forums are here for! :rock:

Seanie.

Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.

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12 years 7 months ago #90598 by Frank Ryan
Replied by Frank Ryan on topic Re: 4mm blur
John, I think it's a shame that Meade and other manufacturers supply
these eyepieces, they are totally useless and only serve to make the
package look better to the buyer.

I had a good quality 4mm that came with a set.
On one night when the seeing was 10/10 and Jupiter was high up,
the 26mm was offering razor sharp detail, as I went thru the eyepiece set
and the views got dimmer and a bit more ropey, the limit was 15mm
The 4mm was offering only very brief flashes of clarity but very dim
and not worth the effort.
As said above,
the lower magnification is the best choice really.
In fact, I also kept my ETX 125 OTA as the quality of the optics are excellent
and it is a super scope especially when used with a bino viewer.

I've often heard it said you build your scope from the ground up.
If the tripod is bad, your views are wrecked (along with your head)
The OTA might be worth thousands but uncolimated it's worthless.
The Eyepiece you use is of major importance - they must be the best you can afford!
Lastly, get thee to a dark place.

Frank.

My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers
The following user(s) said Thank You: peterako

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