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25mm ES 100* confirmed? sale date? preorder?

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#226 star drop

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Posted 05 December 2012 - 03:02 PM

Maybe it is being made on Nibiru.

#227 MRNUTTY

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Posted 05 December 2012 - 03:06 PM

Someday my price will come!

#228 Jobryant

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Posted 07 December 2012 - 03:04 PM

Has anyone had the chance to look through one of these yet? Seems like there should be at least one or two people out there that have had the opportunity to look through one of these by now. I keep telling myself it should be any day now. Yea I've been saying that for about 6 months.

#229 star drop

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Posted 08 December 2012 - 03:05 AM

One would have thought that someone would have ventured forth with performance observations of the prototypes by now.

#230 crsrs

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Posted 08 December 2012 - 06:27 PM

OOOOHHHH that's what's been going on. I was really getting confused about why there is no ES 82 degree inventory anywhere. Thanks for sheading light on this issue, and yes let's hope those eyepieces are soon in our hands.
Carol

#231 Jim Romanski

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Posted 09 December 2012 - 08:56 AM

I heard from someone who was at the Winter Star Party and looked through the 25mm 100 degree prototype as well as the 9mm 120 degree prototype. For the 25mm they saw sharp star images out to the edge and said that it was a comfortable eyepiece to use. They thought it lacked in contrast compared to the Ethos and said that you could see more stars in a 26mm Nagler that they compared it to up to 82 degreees.

They had concerns with the 9mm though. They described the stars as sharp but the background in the final 25% of the field appeared to be less black (i.e. partially illuminated). Perhaps ES has worked out this bug.

#232 Jobryant

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Posted 10 December 2012 - 12:26 AM

Thanks for the info Jim. Sounds promising hopefully it will be just as good as the other ES100s. I can't wait to try it out against my 30mm 80degree EPs.

#233 Shneor

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Posted 10 December 2012 - 02:21 PM

They had concerns with the 9mm though. They described the stars as sharp but the background in the final 25% of the field appeared to be less black (i.e. partially illuminated). Perhaps ES has worked out this bug.

Descriptions of the 9mm 120°'s (really a 9mm 140°) production model performance can be read here: http://www.cloudynig...4866855/page...

#234 star drop

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Posted 12 December 2012 - 02:19 PM

Today Astronomics revealed a prototype ES 30mm 100° eyepiece. Was there any news of the ES 25mm 100° eyepiece?

#235 Shneor

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Posted 12 December 2012 - 03:12 PM

Today Astronomics revealed a prototype ES 30mm 100° eyepiece.

I saw this eyepiece at ASAE in Tucson last month. 8 pounds, I think. But you'd need a 3" focuser.

Clears,

#236 frebie

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Posted 12 December 2012 - 04:35 PM

Today Astronomics revealed a prototype ES 30mm 100° eyepiece. Was there any news of the ES 25mm 100° eyepiece?


They should be in the next container load in January, according to Scott today.

#237 Hothersale

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Posted 12 December 2012 - 06:11 PM

They should be in the next container load in January, according to Scott today.

Wrong forum, I know, but is that where the Comet Hunters are too? I've had one on order for more than a month. Thanks for any info.

#238 jrbarnett

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Posted 12 December 2012 - 11:25 PM

Some dealers have them in current stock, if it's for Christmas:

http://www.highpoint...re-Scientifi...

Regards,

Jim

#239 MRNUTTY

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Posted 13 December 2012 - 08:26 AM

Today Astronomics revealed a prototype ES 30mm 100° eyepiece. Was there any news of the ES 25mm 100° eyepiece?


They should be in the next container load in January, according to Scott today.


I hope so! I have had the 5 and 25 on pre-order since July hoping they came in someday..

#240 bsim

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Posted 13 December 2012 - 10:31 AM

Today Astronomics revealed a prototype ES 30mm 100° eyepiece. Was there any news of the ES 25mm 100° eyepiece?


They should be in the next container load in January, according to Scott today.


Do you have any idea when you will receive a shipment of the almost mythical Explore Scientific 68° 24mm eyepiece?

#241 gatorengineer

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Posted 12 February 2013 - 08:39 PM

reviews on the 25 x 100?, and I have the 9MM 120, and its sharp pretty much to the edge....

#242 leviathan

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Posted 13 February 2013 - 01:01 AM

reviews on the 25 x 100?

Not yet, but here is another topic with discussions about this EP:

http://www.cloudynig...yepieces/Num...

#243 Shneor

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Posted 13 February 2013 - 03:49 PM

I've had a chance to use this eyepiece a couple of times in the field. Both times conditions were mediocre. Coma is evident in the outer 20% of the radius, though maybe less than I'd expect. The field of view is 1.1 degrees for me, which is excellent for large, bright groups (galaxy trios, for example), and also for extended objects like the Rosette (with an H-Beta filter). But contrast is noticeably better in my 20mm ES100°. M42 almost filled the field using an NPB filter. This is not a good finder eyepiece for me, as I often look for relatively faint objects, but there are some objects or groups that it frames better than any other eyepiece I have ever used on my 22". Is it worth the price? Definitely, if you have an SCT, Mak or long focal length refractor. Or if you are an eyepiece junkie...

#244 turtle86

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Posted 13 February 2013 - 10:29 PM

I've had a chance to use this eyepiece a couple of times in the field. Both times conditions were mediocre. Coma is evident in the outer 20% of the radius, though maybe less than I'd expect. The field of view is 1.1 degrees for me, which is excellent for large, bright groups (galaxy trios, for example), and also for extended objects like the Rosette (with an H-Beta filter). But contrast is noticeably better in my 20mm ES100°. M42 almost filled the field using an NPB filter. This is not a good finder eyepiece for me, as I often look for relatively faint objects, but there are some objects or groups that it frames better than any other eyepiece I have ever used on my 22". Is it worth the price? Definitely, if you have an SCT, Mak or long focal length refractor. Or if you are an eyepiece junkie...


I'm wondering how much a Paracorr would help with the coma on this eyepiece. A bit, I would suspect...

#245 Fred1

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Posted 14 February 2013 - 02:27 AM

I've had a chance to use this eyepiece a couple of times in the field. Both times conditions were mediocre. Coma is evident in the outer 20% of the radius, though maybe less than I'd expect. The field of view is 1.1 degrees for me, which is excellent for large, bright groups (galaxy trios, for example), and also for extended objects like the Rosette (with an H-Beta filter). But contrast is noticeably better in my 20mm ES100°. M42 almost filled the field using an NPB filter. This is not a good finder eyepiece for me, as I often look for relatively faint objects, but there are some objects or groups that it frames better than any other eyepiece I have ever used on my 22". Is it worth the price? Definitely, if you have an SCT, Mak or long focal length refractor. Or if you are an eyepiece junkie...


I'm wondering how much a Paracorr would help with the coma on this eyepiece. A bit, I would suspect...



Agreed, my Ethos eps without a Paracorr all show coma in my 18" F/4.3, as does my TV 31NT5. With a Paracorr the views are gorgeous, as they are, also, with my 20mm ES 100°. Note that in the referenced CN thread a few posts back, Don Pensack's (Starman1) post of 1/10/13 says, "...the image was fairly sharp right near the edge" when using it in daytime in a TV NP101 apo at 22x. The TFOV of 4.63° would seem telling but that wasn't on a starfield.
Also, I would expect the 20mm to have better contrast than a 25mm given the greater magnification.

#246 FastMike

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Posted 14 February 2013 - 11:55 AM

reviews on the 25 x 100?, and I have the 9MM 120, and its sharp pretty much to the edge....


I had the ES25 out a few times in various scopes.

For edge of field sharpness I rank it as follows:

1. 21 Ethos
2. 31 Nagler
3. 25 ES

The 25ES was very good near the field stop but the 21E and 31N were both better.

I also noted no problems with the edge of field illumination of the 25ES. Using a defocued star, the ES25 was comparable to the 31N.

#247 Shneor

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Posted 14 February 2013 - 03:47 PM

I've had a chance to use this eyepiece a couple of times in the field. Both times conditions were mediocre. Coma is evident in the outer 20% of the radius, though maybe less than I'd expect. The field of view is 1.1 degrees for me, which is excellent for large, bright groups (galaxy trios, for example), and also for extended objects like the Rosette (with an H-Beta filter). But contrast is noticeably better in my 20mm ES100°. M42 almost filled the field using an NPB filter. This is not a good finder eyepiece for me, as I often look for relatively faint objects, but there are some objects or groups that it frames better than any other eyepiece I have ever used on my 22". Is it worth the price? Definitely, if you have an SCT, Mak or long focal length refractor. Or if you are an eyepiece junkie...


I'm wondering how much a Paracorr would help with the coma on this eyepiece. A bit, I would suspect...

Yhis is a pretty heavy eyepiece, weighs at least 2.2 pounds. Using a Paracorr adds more weight and has the eyepiece sticking out about 7 or 8 inches. That makes it a bit difficult to use. Worth it, I guess, if coma bothers you.

#248 turtle86

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Posted 14 February 2013 - 11:14 PM

Yhis is a pretty heavy eyepiece, weighs at least 2.2 pounds. Using a Paracorr adds more weight and has the eyepiece sticking out about 7 or 8 inches. That makes it a bit difficult to use. Worth it, I guess, if coma bothers you.



Seems there are always tradeoffs. I don't mind using the Paracorr with the 21mm Ethos or 31mm Nagler, so I probably wouldn't mind it with the 25mm ES. But that's about my limit--a while back I tried observing with a Paracorr + Powermate + Ethos but quickly found that trio to be quite unwieldly. Of course dropping the Powermate meant getting more Ethos...

#249 PolarBearCO

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Posted 15 February 2013 - 06:32 PM

There are quite a few 2" EPs over 21mm. I have a TeleVue 35mm Panoptic. I have 42mm and 50mm 2" EPs ordered and on the way now.


I was considering ordering a few EPs over 30mm but read a thread about exit pupil and someone suggested to that person that they exit pupil would be too big to be "favorable."

I have a Zhumell Z10. 1250mm. I don't the forula for figuring exit pupil, but the thread was for a similar scope.

What do you think?

#250 PolarBearCO

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Posted 15 February 2013 - 06:35 PM

Actually the 5.5mm will be out close enough to my wife's birthday that I could buy it for her!!


That reminds me of a Simpsons' episode where Homer wanted a new bowling ball, so he bought one for his wife, Marge, for her birthday knowing she wouldn't want it. He already had drilled it for his hands and had "Homer" enscribed on it, so she was able to see through his thoughtless and selfish gift. Hahaha.






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