Sharpstar

Sharpstar Optics, founded in 2000, is specialized in research, development and production in the field of astronomy. Sharpstar and Askar are the two of the company' s brands dedicated to providing customers with high-quality products and services. In addition to a series of high-quality astronomical telescopes widely praised by the market, it also has a strong OEM background for more than 10 years. 
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This reducer, when used with the 65PHQ astrograph, can effectively shorten the exposure time and significantly increase the field of view.

  • specially designed for the 65PHQ
  • reduces the focal length by 0.75x
  • four-lens system
  • camera-side threads M54 and M48
  • 65 or 55 mm backfocus
 
379.00 €
Estimated delivery time : 1-4 days
 
 
This reducer, connected with the astrographs, can effectively shorten the exposure time and dramatically increase your field of view.
  • Designed for 107PHQ, 130PHQ and 151PHQ
  • Reduces focal length by 0.7x
  • Triplet design with ED glass
  • Plugs into focuser
  • Connection threads M68x1 male, M54x0.75 male, M48x0.75 male
  • 55 mm backfocus from M48 thread
565.00 €
Estimated delivery time : 1-4 days
 
 

The Askar 0,8x Reducer - Corrector for the 185mm f7 Triplet APO turns the 185 mm APO into a fast Astrograph.

  • designed for the Askar 185APO
  • brings the focal ratio down to f5.6
  • suitable for full frame cameras
449.00 €
Estimated delivery time : 2-3 days
 
 

The Askar 1.0x corrector for the 185mm f7 Triplet APO provides a very good image quality across the entire field of view.

  • developed for the Askar 185APO
  • provides very good image quality across the entire field of view
  • suitable for full-frame cameras
579.00 €
Estimated delivery time : 2-3 days
 
 

This long focal ratio flatfield apochromat support 60 mm image circle and does not need calculations for backfocus. If the image is sharp, the field is flat.

  • 130 mm aperture, 1000 mm focal length, f/7.7
  • Petzval like, self flattening design with two ED elements
  • 3.4" dual speed focuser
  • 2" and 1.25" receptacles, M68, M54 and M48 threads
  • Retractable dew shield
  • Losmandy style dovetail bar
  • Handle
  • Vixen type finder base
3869.00 €
Estimated delivery time : 1-4 days
 
 
Askar has created with the FMA135 a compact triplet APO refractor with many photographic and visual possibilities
  • Focal length 135 mm / focal ratio f/4.5
  • Triplet ED lens with 30 mm aperture
  • 3-element corrector for perfect field flattening
  • Working distance 55 mm from the T2 threaded mount
  • With just a few hand movements the telephoto lens becomes a mini guiding scope or a compact spotting scope for observation
  • The photographic field of view is designed up to APS-C format
  • Precise helical focuser on the lens for precise focusing - with lock
  • Can be easily attached to the telescope instead of the finder - fits all common finder shoes
  • Fits on any ball head - ideal also for mobile astrophotography with photo trackers like the Skywatcher Adventurer Mini or iOptron Skytracker
 
395.00 €
Estimated delivery time : 1-4 days
 
 
This long focal ratio flatfield apochromat support 60 mm image circle and does not need calculations for backfocus. If the image is sharp, the field is flat.

  • 151 mm aperture, 1057 mm focal length, f/7
  • Self flattening design with two ED elements
  • 3.4" dual speed focuser
  • 2" and 1.25" receptacles, M86 thread
  • Retractable dew shield
  • Losmandy style dovetail bar
  • Handle
  • Vixen type finder base
5317.00 €
Estimated delivery time : 4-8 weeks
 
 

The Askar 185APO is an apo refractor with 185 mm aperture, 1295 mm focal length and a focal ratio of 1:7 with many practical features.

  • Aperture 185 mm - Focal length 1295 mm - Focal ratio f/7
  • Triplet objective with one ED element
  • Stable 3,5" RAP focuser with micro reduction, 360° rotation connection and 100 mm adjustment travel
  • Sufficient working distance for observation with 2" accessories and for photography
  • Flattener and two reducers available (0.8x)
  • CNC clamps with dovetail bar (Losmandy) and carrying handle
  • Two finder shoes
6099.00 € 6050.00 €
Estimated delivery time : 1-4 days
 
 
With the FMA230, Askar has created a powerful triplet APO refractor with unique visual and photographic application possibilities

  • In just a few steps, the APO telephoto lens becomes a compact astronomical telescope, a guiding tube or a powerful spotting scope for landscape observation.
  • Aperture 50 mm
  • Triplet ED lens with two APO elements for a color-pure image
  • Photographic focal length 230 mm (with 4-element corrector) - focal ratio f/4.6
  • Focal length for observation 275 mm
  • The photographic field of view is designed up to full format
  • Precise helical focuser on the lens for accurate focusing - with lock
  • Weight 1045 grams
  • Practical M48 mount with 55 mm working distance (as telephoto lens)
  • Suitable for 1.25" and 2" accessories for visual observation
  • Vixen / EQ5 style multifunction plate
  • Very well suited for mobile astrophotography with photo trackers like the Skywatcher Adventurer
  • Also suitable as a powerful guiding telescope
  • With a few simple steps the FMA230 becomes a compact spotting scope for observing with 1.25" or 2" accessories
899.00 €
Estimated delivery time : 1-4 days
 
 

The very good correction and the self-flattening design make this small telescope a compact photo machine.

  • Aperture 65 mm / focal length 416 mm / focal ratio f/6.4
  • 5-element system with color clean triplet objective and two corrector lenses built into the tube
  • Stable 2.5" RAP focuser with dual speed and 360° rotation
  • Sufficient working distance for observation with 2" accessories
  • Suitable photo adapters are included in delivery
  • Illuminated image circle with very good correction up to full frame format
  • CNC tube rings with Vixen style EQ5 dovetail bars and carrying handle
  • Finder shoe for standard finder and mini guiding telescopes available
1074.00 €
Estimated delivery time : 1-4 days
 
 

The MCP90 is a universal plate for all potential devices equipped with a standard Vixen dovetail foot and designed for the Askar FRA400/5.6 astrograph.

  • 100 mm length for more flexibility
  • Clamps safely with two screws
  • Versatile with six positions for the clamping screws
  • Five threaded holes and two countersunk bores for attaching to handle or tube rings
 
59.90 €
Estimated delivery time : 1-4 days
 
 

Askar´s filter drawer allows filter changes to as little as 18 mm and provides maximum versatility for astrophotography.

  •  Connections at the telescope side: T2 (M42x0.75), M48x0.75 and M54x0.75 female thread - all adapters included
  •  Connections on camera side: T2, M48x0.75 and M54x0.75 male thread - all adapters included
  •  Inserts for mounted 1.25" and 2" filters included
  •  Inserts for unmounted 31 mm, 36 mm and 50 mm filters included in scope of delivery
  •  Height of the filter changer only 18 mm (without external thread)
  •  The set consists of 10 parts - filters are not included in the scope of delivery
  •  The filter holder is securely fixed in the base body with magnetic force
 
215.00 €
Estimated delivery time : 1-4 days