High-quality extender lens system for astrophotography with the Newton reflector R200SS
- Increases the focal length by a factor of 1.4
- The focal length of the R200SS is increased to 1120 mm (F5.6)
- Interior matte surface prevents reflections
- Special ant-reflective AS coating
- 99.9% light transmission per lens surface
- Construction: 4 elements in 3 groups
- Weight: 245 g
£560.00*
Available, delivery time: 10-12 working days
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Telescopes - Optics and mechanics
The ultimate guide to the ideal microscope for examinations of koi parasites.
Read nowFAQ - Frequently Asked Questions
- Alt-azimuth: easy to use, moves horizontally and vertically
- Equatorial: enables precise tracking of objects with only one axis – ideal for high magnifications and astrophotography
- Moon: from 30 mm
- Planets: from 100 mm
- Deep sky: from 150 mm
Product information "Vixen extender PH set for R200ss"
The optical system structure of 4 elements in 3 groups corrects the coma error to render sharp images up to the edge of the field of view.
The extender illuminates the field of a full-frame camera (44 image circle).
When used in combination with the eyepiece adapter, the 31.7 mm eyepiece can be used for visual observations.
The same anti-reflective AS coatings used on our high-end VSD 100 f/3.8 astrograph are also used here to provide an outstanding light transmission of 99.9% per lens surface.
The completely matte surface in the interior keeps loss of light, ghosting and scattered light to a minimum. When used with the 50.8 mm eyepiece adapter, the extender PH kit provides a high-performance Barlow lens for visual observations and eliminates coma and aberrations over the entire field of view.
FEATURES
- Magnification: 1.4x
- 1120 mm (f5.6) focal length from 800 mm (f4)
- AS coating (max. transmission rate of 99.9% per surface)
- Hood elements (3 groups, 4 elements)
- 44 mm image circle (36x24 mm format, covers the full-frame CCD image)
- Construction: 1x PH extender, 1x Extension tube 66
- Filter size: 48 mm, filter is attachable
- Compatible optical lens barrel: R200SS Newton reflector
- Also suitable for visual observations (31.7 mm eyepiece, normally used with eyepiece adapter)
- Diameter: 56 mm x L: 128 mm
- Net weight: 245 g
DELIVERY CONTENT
- Extender PH
- EX Extender 66
- Dust caps
| Batteries required: | No |
|---|---|
| Colour: | black |
| Focal length (in mm): | 1120 |
| Magnification: | 1.4 |
| Material: | Aluminium |
| Net Weight total (incl. accessories) (g): | 245 |
| Net weight (without access.) (g): | 245 |
Product and safety instructions
Manufacturer:
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede
www.bresser.de
- General safety instructions DANGER Risk of suffocation! Improper use of this product can result in suffocation, especially for children. Therefore, carefully observe the following safety instructions. Keep packaging materials (plastic bags, rubber bands, etc.) away from children! There is a risk of suffocation! Keep cords, ribbons, and similar materials away from children! They could accidentally strangle themselves and suffocate! NOTE Risk of material damage! Improper handling can damage the device and/or accessories. Therefore, only use the device according to the following safety instructions. Do not dismantle the device! In the case of a defect, contact your dealer. They will contact the service center and may send the device in for repair.
- Never look at the sun through an eyepiece/telescope without a certified protection filter. A moon filter can never be used for solar observation. The moon filter is only suitable for moon observation. The solar filter must be mounted in front of the telescope opening, not at the eyepiece. Otherwise, the concentrated light beam through the optics will immediately destroy the filter foil, leading to severe eye damage, including permanent blindness.
- Never leave the optics unattended. Children and inexperienced adults could point the telescope at the sun without proper precautions and lose their eyesight.
- Do not expose the device to high temperatures.