SkyWatcher Coma Corrector for f/5
US$ 200.11Visual / photographic coma corrector with 50,8mm graft for Newtonian telescopes. Adaptable to all Newton Skywatcher f / 5 with Crayford or Dual Focuser 2 focuser. For the photographic use requires the M48 ring
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.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)
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
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.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.
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.
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