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TOPIC: Eyepiece


L

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RE: Eyepiece
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@Anonymous
For the price, it is an ideal camera for someone trying to get into astrophotography.
i have not used this particular model, but something similar a few years ago, and was fairly pleased with the images.
The images produced can be software processed  and 'stacked' together to improve the signal to noise ratio. But for professional usage it is not sensitive enough  (For professional SBIG cameras expect to pay 10 - 100 times the price).

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Anonymous

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Has anyone used this 1.3 megapixel digital eyepiece?  What is the image quality like on your PC?  Does it compare to what you see with the telescope?

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L

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G227 Digital Eyepiece
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G227 Digital Eyepiece.

Manufacturer Specifications

  • Product Description: Digital Eyepiece for Telescope - for viewing and recording via computer
  • Imaging Sensor: 1/2 Inch 1.3 Megapixel CMOS
  • Pixel Size 5.2m * 5.2m
  • Connection to Telescope: Ocular tube
  • Size of Ocular Tube: 31.75mm - 24.5mm
  • Still Image
    - Format: JPEG
    - Resolution: 2304 x 1728
  • Video
    - Format: WMV
    - Resolution: 160 x 120 to 2048 x 1536 (software controlled)
    - FPS: 10 to 15 frames per second (software controlled)
  • Sensitivity:1.8 V/lux-sec@550nm
  • Spectrum response 400nm - 1000nm
  • White Balance: Auto
  • PC Interface: USB 2.0
  • Shutter: ERS(electronic rolling shutter)
  • Power Source: USB port of computer
  • USB Cable Length: 1.5m
  • Dimensions: L: 65 x Diameter: 65 (mm)
  • Compatible Systems: Windows 2000, XP, Vista, 7 (32 bit version only)
  • £33.42

Digital Eyepiece for Telescope - View and Record to Computer

This easy to use digital eyepiece for telescopes connects to the USB port on your computer and gives you a real-time image from your telescope-- directly on your computer screen! This is the best way to view high resolution images of the moon, stars, sun, solar systems and more, and without having to bend over your telescope and squint with one eye to enjoy the heavenly attractions. If you own a telescope then this digital eyepiece will make using your telescope easy and fun again for the whole family.
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Minox Digital Eyepiece Camera 5.0

The Minox Digital Eyepiece Camera 5.0 functions as a dSLR camera body, where you fit it to a telescope. There are several different adaptors to fit various telescope brands.
Features include a 5 megapixel sensor, a 2.4" TFT LCD display, a shock- and water-proof body, a SD memory card slot and 128MB of internal memory. The camera retails for $449.

The very compact size of around 68 x 56 x 71 mm and weighing in at 220 grams the MINOX Digital Eyepiece Camera is so convenient to carry and travel with that it looks to be the perfect accessory for every quality spotting scope.
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L

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Eyepieces come in three different barrel sizes: 0.965 inches, 1.25 inches, and 2 inches.

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L

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Meade 4000 Series Eyepiece
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Meade 12.4mm 4000 Series Super Plossl Eyepiece

Meade Series 4000 eyepieces yield the widest possible fields of view, consistent with pinpoint edge-of-field sharpness and long eye relief-and yet with extremely low astigmatism, spherical aberration, and off-axis colour. Incorporating 7-layer multi-coatings and edge-blackened optics for optimum image contrast, these sophisticated 4 to 8-element designs permit levels of optical performance generally impossible to achieve with eyepieces of fewer elements.
All Series 4000 eyepieces include a soft rubber eyeguard, custom fitted to each eyepiece with a bayonet mount. The eyeguards fold down for eyeglass wearers, and in fact the folded eyeguard shields eyeglasses from coming into contact with the metal eyepiece housings. Rubber grips are provided on all but the three shortest focal length Super Plössl eyepieces.
meade40001-1.gif
Super Plössls: Designed to utilise the very latest in optical glass types, Meade 4-element Super Plössls are excellent general-purpose eyepieces. For observing hairline lunar and planetary detail, splitting close double stars, or for resolving faint nebulosity in deep-space, Meade Super Plössls optimise the performance of any telescope type, whether f/10 Schmidt-Cassegrain, f/16 refractor, or f/4 reflector. All of Meade's Super Plossl eyepieces shorter than 32mm are parfocal.

* Apparent Field of view: 52°
* Diameter: 1.25in
* £45.00

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Zhumell 1.25 Inch Eyepiece and Filter Kit
The lens/filters bundled in this package are great for beginners who wants various quality optics, at a cheap price, for a new telescope.

Technical Details

* 4mm, 6mm, 12.5mm, and 32mm Fully-coated 1.25 Super Plossl  Eyepieces
* 2x Achromatic Barlow Lens
* #12 Yellow filter
* #21 Orange filter
* #23A Light Red filter
* #56 Green filter
* #82A Light Blue filter
* Polarising filters
* Chrystalview (neutral density, ND96-0.9) Moon filter
* Aluminium-sided case


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3.6, 6.3, 10, 20, and 25 millimetre Plossl eyepieces
£99.99


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-- Edited by Blobrana on Monday 7th of September 2009 07:39:13 PM

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Tele Vue 21mm Ethos eyepiece

Focal Length:     21mm
Apparent Field:  100°
Eye Relief:          15mm
Effective Field Stop Dia.: 36.2mm
Barrel Size:         2"
Weight:              2.25 lb.

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Planetary Eyepieces

Here's the problem: wide-field eyepieces have 6-8 lenses, often grouped in pairs, to achieve a wide and flat field of view. But these lenses often bring light to focus at different points across the field of view. Not a big deal for faint objects. But this becomes a problem for brighter objects.

Another problem: the multiple lens surfaces scatter light which causes distracting halos around bright objects and reduced contrast of bright and dark features.

Since the moon and planets reveal the most detail under higher magnification, a good planetary eyepiece has a short focal length, typically 3-9 mm depending on your telescope.

And the good news with fewer lenses and a narrower field of view, planetary eyepieces often cost less than wide-field eyepieces.

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