SKYWATCHER ESPRIT 100ED PRO APO TRIPLET
Sky-Watcher
Apochromatic triplet
100 mm
f/5.5
550 mm
6.15 kg
SKYWATCHER ESPRIT 100ED PRO APO TRIPLET is backordered and will ship as soon as it is back in stock.
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The Skywatcher Esprit 100ED PRO is an apochromatic triplet refractor that offers high performance for demanding astrophotographers. The objective lens features an element of extra-low dispersion glass (ED) that minimizes the chromatic aberration for the best colour correction.
The 3" linear power focuser is solid and backlash-free, with zero image shift. It operates at two speeds due to the 11:1 reduction mechanism for extra fine focusing adjustment, which is paramount for astrophotography and high resolution observations. The knobs have been redesigned to allow smooth and accurate usage, even with gloves. The integrated rotator makes framing targets quick and easy.
The objective lens is fully multi coated with Skywatcher's proprietary new "Metallic High-Transmission Coating" (MHC) for an effective anti-reflection result that approaches a transmission of 99.5%. The aluminium tube has knife-edge baffles and is blackened to ensure high contrast and absorbing stray light.
The Esprit 100ED includes a two element field flattener, correcting the frame for field curvature and providing a 40mm imaging circle, making it suitable for large sensors.
The Esprit 100ED Pro includes a high quality 2" dielectric diagonal, right angled 9 x 50 finderscope, 1.0x field flattener, Canon EOS M48 T-ring, plus adapters for connecting common accessories and a heavy-duty hardcase.
| Optical design |
Apochromatic ED triplet |
|
Objective diameter |
100 mm |
|
Focal length |
550 mm |
|
Focal ratio |
f/5.5 |
|
Resolving power |
1.20 arc second |
|
Stellar limiting magnitude |
12 |
|
Max. magnification |
200 x |
|
Light gathering power |
204 times the human eye |
|
Mount attachment |
Losmandy-style dovetail |
|
Focuser |
3" linear power dual speed (11:1) |
|
Tube weight |
6.15 kg |
|
Tube length |
465 mm |
|
Tube diameter |
131 mm |
|
Dew shield diameter |
150 mm |
|
Visual back focus |
185 mm |
|
Flattener back focus |
63 mm from M66 x 1 thread, 55 mm with 8 mm spacer ring |
|
Threads on tube rings |
1/4"-20, 80 mm between outermost threads, 51 mm between middle threads approx. |
|
Distance between tube rings |
85 mm centre to centre approx. |
- Esprit 100ED with dual speed focuser
- 2" dielectric star diagonal (90°)
- Field flattener with M48 x 0.75 thread
- 9 x 50 right angled finder scope
- Canon EOS T-ring
- Vixen-style dovetail bar
- 2" to 1.25" eyepiece adapter
- Foam-lined aluminium carrying case
