- NP101is 4″ aperture, 540mm focal length, f/5.4, 4-element APO, flat-field Optical Tube Assembly
- The NP101is features a new 4-element, flat field optical design with larger rearlenses for chips up to 50mm diagonal
- New focuser with 2.4″ output diameter and 3″ input inside diameter does not restrict the additional light from the larger optics from reaching the corners of those large chips.
- Focusmate installed
- Sliding captive dew shield
Concept: CCD cameras have challenged telescope optics beyond anything ever placed at the focal plane. Tele Vue knew it’s APO objectives were up to the challenge, & with the proper tweaks would be extraordinary tools for the imager. With Tele Vue Imaging System (is) telescopes, they have refined their instruments & optional equipment beyond anything a CCD chip has seen.It started small (literally) in 2005 with the Tele Vue-60is & available Digital Micrometer Kit. Achieving critical acclaim with
List Price: $ 3,985.00
Price: $ 3,907.99
A few nice Televue telescope images I found:
Jupiter: SEB Revival
Jupiter’s apparent size as seen from the Earth has noticeably shrunk since I last imaged it, but even a small telescope shows that the resurgence of the South Equatorial Belt is well underway.
9 January 2011, 18:32 GMT
Vixen SP-102 refractor
Tele Vue 2.5x Powermate (giving an effective focal length of 2500mm)
Canon EOS 40D DSLR
Exposure time 1/100 sec, ISO 800
186 photos, stacked and sharpened in RegiStax V5.1
Additional levels & curves enhancement, colour-balancing etc. in Photoshop
Broadstairs, January 2011.
Full Moon (TV-60)
This is a single shot (no stacking) taken with a Tele Vue TV-60 APO refractor (360mm focal length). Mild sharpening, contrast enhancement and cropping in Digital Photo Professional; otherwise no additional processing. This is a colour image – note the almost total absence of blue fringing on the limb.
I’m sure Al Nagler doesn’t need me to sell telescopes for him, but the quality speaks for itself.
- High-index glasses to improve the edge-field performance
- Fully multicoated
- Parfocal
- Rubber Eyeguards, Grip Rings, Filter Threads,
- Blackened Lens Edges, Saftey undercuts
Diffraction limited “on-axis” performance is a given. Using more expensive high-index glasses to reduce astigmatism and lateral color at the field’s edge, Tele Vue Plossls deliver sharper images than any other brand of 4 or 5 element “Plossl” or Orthoscopic designs. The faster the focal ratio of your telescope, the greater your visual reward for using Tele Vue eyepieces. Tele Vue Plossls feature full multicoatings for greatest light transmission and contrast.
List Price: $ 160.00
Price: $ 105.03
Question by DJ: A few questions about telescope accessories (I have a new 8″ Dob.; f5.9, 1200mm Focal Length).?
The only thing I have right now to go with it are the following eyepieces: 9.7mm and 20mm Meade 4000 Super Plossls, and a Orion 25mm Sirius Plossl. I enjoy planetary viewing, but am excited about the possibility of picking up galaxies and nebula in the new scope. SO……
1. What would be the first three accesories you would buy if you were me? Why?
2. Short vs. Long Barlows – What’s the difference.
3. My scope will accept 1.25’s and 2″ eyepieces. Should I spend money initially on 2’s?
4. Good filters – bad filters – What’s the difference?
5. Brand names to look for and to stay away from on eyepieces.
6. Televue plossl or Orion ED? Which is superior. What eyepieces (brand too) are the best for the price?
I know this is a pretty long question. Feel free to answer only the parts you want. Best Answer to whoever is the most helpful. In advance to all who respond – Thanks for spending the time on this one. I appreciate your input.
Best answer:
Answer by Bullseye
Wow! a bunch of questions! You have a nice beginner’s telescope.
Televue is considered better optically than most other eyepieces, but you PAY for the optics.
How long have you had this telescope? Wait at least 6 months before you start spending money on more eyepieces. Don’t even buy a barlow (long one would be better optically for your DOB.).
Two inch eyepieces would give you more light path to match your 2 inch focuser. But WAIT! I suggest you immediately join a local Astronomy club and start attending their meetings and star parties.
Also buy a nice star chart field manual. Here are two:
“Objects in the Heavens” by Peter Birren
” Turn Left at Orion”
Also you can download free Telrad charts on www.cloudynights.com A Telrad would be the only accessory, along with the following that I would buy.
Red flashlight
Small light portable table
And for Christmas an Observing Chair
Clear Skies!
Know better? Leave your own answer in the comments!
