- -3%
Celestron Reducer Lens 0.7x - EdgeHD 800
Regular Price: US$ 447.39
US$ 436.03
The EdgeHD .7x Focal Reducer Lens makes your EdgeHD 800 one full f-stop faster than f/10, doubling the equivalent exposure at f/10 
Askar Reducer 0.8x for 140 APO
US$ 348.66The 0.8x reducer can bring the focal ratio of the Askar 140APO to F5.6. This is a standard gearbox with field flattening capability. A shorter focal ratio allows the OTA to have a wider field of view and faster exposure times, making it suitable for capturing large areas of nebulae, star clusters and faint, fast-moving celestial objects.
Askar Reducer 0.6x for 103 APO
US$ 348.66The 0.6x reducer can bring the focal ratio of the Askar 103APO to F4, also providing field flattening. Askar 103APO adopts a detachable tube design, where the back of the tube can be removed when using the 0.6x reducer, allowing the telescope to have the length needed to achieve an F4 focal ratio.
Askar Flattener 1.0x for 185 APO
US$ 348.66The 1.0x flattener does not change the focal ratio of the telescope itself. After being attached to the Askar 185APO, it maintained a focal ratio of 7. The flattener corrects field curvature and coma, resulting in flatter field edges and finer star points.
Askar Flattener 1.0x for 140 APO
US$ 348.66The 1.0x flattener does not change the focal ratio of the telescope itself. After attaching it to the Askar 140APO, it still maintained a focal ratio of 7. The flattener corrects field curvature and coma, resulting in flatter field edges and finer star points.
Askar Reducer 0.8x for 185 APO
US$ 348.66The 0.8x reducer can lower the focal ratio of the Askar 185APO to F5.6. This is a standard gearbox with field flattening capability. A shorter focal ratio allows the OTA to have a wider field of view and faster exposure times, making it suitable for capturing large areas of nebulae, star clusters and faint, fast-moving celestial objects.
SkyWatcher Coma Corrector for Newton f/4
US$ 304.96Coma corrector for Newton f/4 Quattro telescopes. Requires the M48 photo ring.
Askar Reducer f/3.9 for Refractor FRA400
US$ 296.22FullFrame f/3.9 reducer for Askar FRA400 - Allows you to reduce the Askar FRA400 to f/3.9 with a flattened field for FullFrame - Diagonal equal to 44mm. Integrated 2" thread - M48x0.75 connection. Backfocus 55mm
The TS Superflat GPU coma corrector is one of the best correctors for astrophotography through fast Newtonians.
- 4-element coma corrector for excellent imaging in the field and on the axis.
- Designed by Gyulai Pal in Hungary (GPU-Optics)
- Perfectly suitable for Newtonian telescopes with focal ratios of f/4 - provides very good results from f/3.5 to f/6.
- Very tolerant against tilting.
- Focal length is not changed.
- Camera connection through M48 thread.
- For better stability and accuracs, the corrector can be screwed to the focuser. Connection adapters for cameras and focusers are available.
- -8%
SkyWatcher Focal Reducer / corrector Evostar 0.85X ED72
Regular Price: US$ 271.75
US$ 252.53
Focal Reducer / corrector Evostar 0.85X ED72.
Requires M48 ring.
0.85x Focal Reducer/Corrector for Sky-Watcher PRO 80 ED APO is designed for serious Astro-Imagers. Optimized for the Sky-Watcher PRO 80 ED APO, this superb quality accessory effectively reduces the telescope’s focal length by a factor of 0.85x and provides much improved field-edge correction. Features:
- 55mm back focus
- M48 threads (not standard T-thread)
- Drops ProED 80 from f/7.5 to f/6.3
OUT OF STOCK
Askar Reducer 0.8x for 103 APO
US$ 235.06The 0.8x reducer can bring the focal ratio of the Askar 103APO to F5.4. This is a standard reducer with field flattening capabilities. A shorter focal ratio allows the telescope to have a wider field of view and faster exposure times, making it suitable for capturing large areas of nebulae, star clusters, and faint, fast-moving celestial objects.
Askar Flattener 1.0x for 103 APO
US$ 235.06The 1x flattener does not change the focal ratio of the telescope. After being attached to the Askar 103APO, it still maintained a focal length of f/6.8. The flattener corrects field curvature and coma, resulting in flatter field edges and finer star points.
Askar Reducer 0.8x for 120 APO
US$ 235.06The 0.8x reducer can bring the focal ratio of the Askar 120APO to F5.6. This is a standard gearbox with field flattening capability. A shorter focal ratio allows the telescope to have a wider field of view and faster exposure times, making it suitable for capturing large areas of nebulae, star clusters and faint, fast-moving celestial objects.
Askar Flattener 1.0x for 120 APO
US$ 235.06The 1.0x flattener does not change the focal ratio of the telescope. After attaching it to the Askar 120APO, it maintained a focal ratio of 7. The reducer corrects field curvature and coma, resulting in flatter field edges and sharper star points.
The 2" CCD compressor reduces the focal length of telescopes with the factor 0.67x, thus allowing significantly shorter exposure times.
- ♦ The focal reducer is perfectly suitable for RC telescope. It also works good with Celestron EHD or Meade ACF telescopes or with refractors up to the focal ratio F/9
- ♦ The image field of DSLR cameras up to APS-C format is illuminated - full illumination up to 29 mm
- ♦ Easy connection to the telescope via 2" barrel
- ♦ Optimal working distance from the M48x0.75 thread to the camera sensor is 85 mm - enough space for accessories like off-axis guider or filter wheel
- ♦ 2" filter thread at the telescope side
Tecnosky Coma Corrector 0.95x
US$ 226.32New Coma Tecnosky corrector with 0.95x reduction factor and leveled field for APS-C sensors and up to APS-H (type kodak 16200)
- -7%
SkyWatcher Focal Reducer / Corrector Evostar 0.85X ED100
Regular Price: US$ 232.43
US$ 217.58
Focal reducer / corrector 0.85X for Evostar ED100 refractor. Requires M48 ring.
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