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Equipment Discussions >> Eyepieces

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Gastrol
Pooh-Bah


Reged: 11/04/11

Loc: los angeles
Filters will not thread on New 30mm ES ep
      #5377435 - 08/20/12 12:17 PM

Anyone having trouble fitting 2" filters on ES eyepieces?
I just received my new ES 82°-30mm eyepiece and am having trouble threading any one of my 2" filters. I own several other ES eyepieces but this is the only 2" ES eyepiece I own so I can't compare.
The filters thread fine on all my other 2" non-ES eyepieces.

I checked for barrel roundness and it's fine. I noticed the threads seemed very fine and did not seem to be cut deeply. That seemed to be the problem.

I will contact the vendor this morning to see if this can be exchanged.
I was just wondering if anyone else had a similar problem.

Thanks!


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astro_baby
scholastic sledgehammer


Reged: 06/17/08

Loc: United Kingdom
Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5377622 - 08/20/12 01:52 PM

I just tested my own ES30mm 82' with two Skywatcher 2" filters (UHC and OIII).
I usually do this when i get a new EP but your post made me unsure Test, test and test again

The UHC is fine no problems - the OIII is a bit tight right at the start of the thread but with a little push goes on ok. When I say a little push I mean just a tand more force than I would expect - as if theres maybe just a rough spot on a thread.


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Gastrol
Pooh-Bah


Reged: 11/04/11

Loc: los angeles
Re: Filters will not thread on New 30mm ES ep new [Re: astro_baby]
      #5377710 - 08/20/12 02:42 PM

OK, I just received this reply from the vendor:

"I just spoke with Explore Scientific and they are saying the eyepieces are not threaded for filters. The threads you see there are apparently baffle threaded and not threaded for screw in filters."

I'm actually a bit puzzled by this. I can force the filter to thread but it's a very tight fit, maybe one complete turn and no more, and it takes some effort for the thread to 'catch' initially.....something I'm not willing spend extra time doing in the dark.


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JoeM101
scholastic sledgehammer


Reged: 04/09/12

Loc: 45.66086, -73.54702
Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5377739 - 08/20/12 02:52 PM

why would ES put out EPs that don't accept filters.. where's the logic in that?

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Gastrol
Pooh-Bah


Reged: 11/04/11

Loc: los angeles
Re: Filters will not thread on New 30mm ES ep new [Re: JoeM101]
      #5377748 - 08/20/12 02:59 PM

Quote:

why would ES put out EPs that don't accept filters.. where's the logic in that?



Exactly. I can't use a filter when using this ep on my dob??


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bherv
Carpal Tunnel
*****

Reged: 03/10/06

Loc: WMass
Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5377784 - 08/20/12 03:20 PM

Mine is a little tight also. I had the same problem with my ES 20 and 14 100 degree. What I did to solve the problem is kept threading and unthreading the filters to remove any burrs from the threads. Now my Orion filters thread on to eyepieces just fine. Just don't force the filter otherwise it may get stuck.
Barry


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Pollux556
Pooh-Bah
*****

Reged: 12/14/08

Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5377789 - 08/20/12 03:22 PM

Quote:

OK, I just received this reply from the vendor:

"I just spoke with Explore Scientific and they are saying the eyepieces are not threaded for filters. The threads you see there are apparently baffle threaded and not threaded for screw in filters."




Sorry but this is not true ! I just tested my Baader OIII on my ES30 82° and it thread very well. Do you talked about the ES 30mm 82° N2 purged ?


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Gastrol
Pooh-Bah


Reged: 11/04/11

Loc: los angeles
Re: Filters will not thread on New 30mm ES ep new [Re: Pollux556]
      #5377801 - 08/20/12 03:27 PM

Quote:

Quote:

OK, I just received this reply from the vendor:

"I just spoke with Explore Scientific and they are saying the eyepieces are not threaded for filters. The threads you see there are apparently baffle threaded and not threaded for screw in filters."




Sorry but this is not true ! I just tested my Baader OIII on my ES30 82° and it thread very well. Do you talked about the ES 30mm 82° N2 purged ?




Yes, same ep. My Baader O-III along with other Celestron and Orion filters will not thread. If the thread catches it can go maybe one full 'tight' turn, and no more.


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Pollux556
Pooh-Bah
*****

Reged: 12/14/08

Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5377828 - 08/20/12 03:39 PM

Quote:


Yes, same ep. My Baader O-III along with other Celestron and Orion filters will not thread. If the thread catches it can go maybe one full 'tight' turn, and no more.




There is a problem with your EP for sure. In the spec at Explore Scientific site they specified that the barrel of the 82° series accept standard filter:


Optical Design: 6 or 7* Elements; Combination of: Dense Crown, Light Crown, Dense Flint, and Lanthanum Optical Glasses*see chart

Apparent Field: 82°

Coatings: EMD™ (Enhanced Multilayer Deposition) Coatings

Body: Anodized Black Aluminum; Laser-Etched Description and Serial
Number; Rubber Grip: Internally O-Ring Sealed and Nitrogen Purged

Barrel: Stainless-Steel, Double Taper, Accepts Standard Filters

Eyecup: Rubber Folding Type


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JoeM101
scholastic sledgehammer


Reged: 04/09/12

Loc: 45.66086, -73.54702
Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5377834 - 08/20/12 03:44 PM

Quote:

OK, I just received this reply from the vendor:

"I just spoke with Explore Scientific and they are saying the eyepieces are not threaded for filters. The threads you see there are apparently baffle threaded and not threaded for screw in filters."

I'm actually a bit puzzled by this. I can force the filter to thread but it's a very tight fit, and it takes some effort for the thread to 'catch' initially.....something I'm not willing to do in the dark.




I would definitely call them back, the guy you spoke to must have been mistaken, makes no sense at all


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Tank
Carpal Tunnel
*****

Reged: 07/27/09

Loc: Stoney Creek, Ontario, CANADA
Re: Filters will not thread on New 30mm ES ep new [Re: JoeM101]
      #5377912 - 08/20/12 04:19 PM

Which version of the ES 30mm
is it this one:
http://www.astronomics.com/main/product.asp/catalog_name/Astronomics/category_name/E6W5QA4JCVNB9NW602NAT0S6G7/product_id/ES8230W

or this one

http://telescopes.net/store/82-series-eyepiece-30mm.html

Think they should both be threaded!


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simpleisbetter
Carpal Tunnel
*****

Reged: 04/18/11

Re: Filters will not thread on New 30mm ES ep new [Re: Tank]
      #5377949 - 08/20/12 04:35 PM

This complaint comes up here frequently with 2" Synta filters, which include Orion, Skywatcher, Celestron, and whatever other brands they make. I've always had trouble with the Orion 2" filters. The problem is their threads are a shallower depth cut from OD to ID than most eyepieces and other filters. There seems to be two standards wrt filter threads.

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AhBok
sage


Reged: 12/02/10

Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5377960 - 08/20/12 04:41 PM

I would forward that reply to Scott Roberts. An incorrect statement like that can snowball and cost sales. My 30 mm ES 82 is definitely threaded for 2" filters and works quite well with them.

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GeneT
Ely Kid
*****

Reged: 11/07/08

Loc: South Texas
Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5378116 - 08/20/12 06:09 PM

Quote:

"I just spoke with Explore Scientific and they are saying the eyepieces are not threaded for filters.




Doesn't make sense.


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Gastrol
Pooh-Bah


Reged: 11/04/11

Loc: los angeles
Re: Filters will not thread on New 30mm ES ep new [Re: GeneT]
      #5378192 - 08/20/12 07:10 PM

Well, apparently, the vendor tried to thread a filter on one of their remaining stock ep's and it did not thread.
Anyway, I've requested an exchange for another with good working threads.


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csa/montana
Den Mama
*****

Reged: 05/14/05

Loc: montana
Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5378275 - 08/20/12 08:10 PM

I just threaded both my new Denkmeir 2" filters on my 30ES, and both went on very smoothly.

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ngc2289
Post Laureate
*****

Reged: 04/13/05

Loc: Corpus Christi, TX.
Re: Filters will not thread on New 30mm ES ep new [Re: csa/montana]
      #5378311 - 08/20/12 08:32 PM

Most likely what has happened is due to a maxed out production rate. Most likely because of the sale they are spitting these eyepieces out so fast that the QC has slipped a bit. So these eyepieces got thru without the proper threading.

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Gastrol
Pooh-Bah


Reged: 11/04/11

Loc: los angeles
Re: Filters will not thread on New 30mm ES ep new [Re: ngc2289]
      #5378316 - 08/20/12 08:36 PM

Quote:

Most likely what has happened is due to a maxed out production rate. Most likely because of the sale they are spitting these eyepieces out so fast that the QC has slipped a bit. So these eyepieces got thru without the proper threading.




Exactly, and sadly, my thinking as well...


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simpleisbetter
Carpal Tunnel
*****

Reged: 04/18/11

Re: Filters will not thread on New 30mm ES ep new [Re: Gastrol]
      #5378374 - 08/20/12 09:08 PM

I actually suspect there's nothing wrong with your eyepiece's threads. If you have access to a non-Synta brand filter try it out. I'll bet it works fine.

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csa/montana
Den Mama
*****

Reged: 05/14/05

Loc: montana
Re: Filters will not thread on New 30mm ES ep new [Re: simpleisbetter]
      #5378381 - 08/20/12 09:11 PM

Quote:

I actually suspect there's nothing wrong with your eyepiece's threads. If you have access to a non-Synta brand filter try it out. I'll bet it works fine.




I'd agree with that. Some filters are very difficult to thread on. My Orion was so difficult, it would only catch one thread. I worked it back & forth for quite some time, each time it threaded a little further on, until finally it would thread on; but it was a struggle to get it to thread, in the beginning.


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