Astronomy Specialist

USED SKYWATCHER ESPRIT 100ED

Regular price $2,69900AUD
SKU: U297-SWESPRIT100


Grab yourself a bargain with this second-hand Esprit 100ED Pro! The optics and tube are in excellent condition. As with all used items, there may be cosmetic imperfections but these do not affect the performance or functionality. Includes original accessories as pictured including rings, dovetail and hardcase. Photos are of the actual item.

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.


Specifications

 

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.

 


    Downloads

     

     Instruction manual