News from NEAF - new Televue line of eyepieces

Here is the place to talk about all those equipment(Telescope, Mounts, Eyepieces, etc...) you have. Not sure which scope/eyepiece is best for you? Trash it out here!
Post Reply
User avatar
vhuang168
Posts: 169
Joined: Wed Apr 25, 2007 3:13 am
Location: Sunnyvale, CA, USA

Post by vhuang168 »

Lol... why? You want to see what the guy next to you is doing as well as what's in the sky?

Vincent
Top
User avatar
Tachyon
Posts: 2038
Joined: Wed Jun 01, 2005 11:40 am
Location: Bedok

Post by Tachyon »

vhuang168 wrote:Lol... why? You want to see what the guy next to you is doing as well as what's in the sky?

Vincent
Heh... what an excellent idea! Actually, I was just wondering if it can be done technically?
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]
Top
User avatar
Canopus Lim
Posts: 1144
Joined: Fri Jun 03, 2005 12:46 pm
Location: Macpherson

Post by Canopus Lim »

I do not think a 180 degree eyepiece can be done with current technology. The angles are just too extreme! It is not possible to have parallel rays out of the eyepiece at 90 degree half angle unless the design is very radical and different from any current eyepiece design.
AstroDuck
Top
User avatar
rcj
Vendor
Posts: 3043
Joined: Sun Sep 28, 2003 1:46 am
Location: Katong
Contact:
Contact rcj

Post by rcj »

Tachyon, should have given the order placement to you for the MACH1GTO, when it was time to place payment in February!
Photon Bucket
http://www.celestialportraits.com
Facebook page: celestialportraits
Top
User avatar
Airconvent
Super Moderator
Posts: 5803
Joined: Tue Sep 30, 2003 11:49 pm
Location: United Federation of the Planets

Post by Airconvent »

Can't understand all this waiting for a telescope. What do they do? Wait for the lens to grow and mature? its totally unforgiveable for a company to make their customers wait so long for a product. In 2-3 years, new products that are better and cheaper could have appeared as is the possible case now. I think such companies deserve to lose their customers...
By the way, the Televue EP is huge too. Very soon the eyepieces would be as big as Milo tins and the scopes size would have to be increased to take it...I will call these herschelian scopes... :D
The Boldly Go Where No Meade Has Gone Before
Captain, RSS Enterprise NCC1701R
United Federation of the Planets
Top
User avatar
VinSnr
Administrator
Posts: 2310
Joined: Sun Sep 28, 2003 7:01 pm
Location: Andromeda Galaxy

Post by VinSnr »

Airconvent wrote:Can't understand all this waiting for a telescope. What do they do? Wait for the lens to grow and mature? its totally unforgiveable for a company to make their customers wait so long for a product. In 2-3 years, new products that are better and cheaper could have appeared as is the possible case now. I think such companies deserve to lose their customers...
By the way, the Televue EP is huge too. Very soon the eyepieces would be as big as Milo tins and the scopes size would have to be increased to take it...I will call these herschelian scopes... :D
weird thing is, people are still waiting for the AP. The list just gets longer.

I think most people buy other scopes first while waiting. And if one day AP gives them a call, they just sell away what they have and buy the AP scope.
Top
User avatar
Canopus Lim
Posts: 1144
Joined: Fri Jun 03, 2005 12:46 pm
Location: Macpherson

Post by Canopus Lim »

Airconvent wrote:Can't understand all this waiting for a telescope. What do they do? Wait for the lens to grow and mature? its totally unforgiveable for a company to make their customers wait so long for a product. In 2-3 years, new products that are better and cheaper could have appeared as is the possible case now. I think such companies deserve to lose their customers...
By the way, the Televue EP is huge too. Very soon the eyepieces would be as big as Milo tins and the scopes size would have to be increased to take it...I will call these herschelian scopes... :D
If you say the TV eyepiece is huge...wait till you see this:
http://www.williamoptics.com/eyepiecesD ... 8_spec.htm

Weight is 'only' 1kg (about 2 pounds) and the physical size is that of a tin. :P

Anyway, with a AFOV of 100 degree, a lot of eyepieces can throw away. For low power, this eyepiece will be the best because of higher magnification while retaining the field of a lower power eyepiece. This would just 'thrash' all the other eyepieces out there that has smaller AFOV when come to contrast and resolution for the same field. A 13mm Ethos will have the same field as a 26mm Plossl and its contrast due to magnification is surely much better. There is just no contest.
AstroDuck
Top
User avatar
Tachyon
Posts: 2038
Joined: Wed Jun 01, 2005 11:40 am
Location: Bedok

Post by Tachyon »

Canopus Lim wrote:If you say the TV eyepiece is huge...wait till you see this:
http://www.williamoptics.com/eyepiecesD ... 8_spec.htm

Weight is 'only' 1kg (about 2 pounds) and the physical size is that of a tin. :P
I have one. It's not as bad lah... wanna try on your obsession? :P
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]
Top
User avatar
Canopus Lim
Posts: 1144
Joined: Fri Jun 03, 2005 12:46 pm
Location: Macpherson

Post by Canopus Lim »

Tachyon,
My scope is only balanced for my 17 Nagler which is about 725g. It may not be able to balance with that eyepiece which weighs 1000g. However, it could balance if I add the counter weight. Next time borrow from you to try. Haa.
AstroDuck
Top
User avatar
Tachyon
Posts: 2038
Joined: Wed Jun 01, 2005 11:40 am
Location: Bedok

Post by Tachyon »

http://www.televue.com/engine/page.asp?ID=311
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]
Top
Post Reply

Return to “Equipment Discussions”