Product was successfully added to your shopping cart.
  • GSO Ritchey-Chretien 304mm f/8 con intubazione in carbonio truss e ESATTO 3" GSO Ritchey-Chretien 304mm f/8 con intubazione in carbonio truss e ESATTO 3"

Free shipping in most EU countries

for order at least €500

GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube and ESATTO 3"

Product code: GSRC12TrussEST3

Be the first to review this product

Quick Overview

GSO 304mm f/8 Ritchey-Chretien with truss carbon fiber tube and ESATTO 3" robotic microfocuser is the perfect telescope for long exposure astrophotography also with heavy cameras and accessories. Thanks to the optional corrector it offers a large corrected field.

This offer contains:

GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube

Qty: 1

Order

GSO Ritchey-Chretien 152mm f/9 con intubazione in metallo

ESATTO 3" robotic microfocuser

Qty: 1

In stock

ESATTO 3" focheggiatore robotico micrometrico

Adapter ESATTO 3" for GSO/Orion/TPO Ritchey-Chretien 10, 12, 14 and 16 inches

Qty: 1

In stock

Adattatore ESATTO 3" per GSO/Orion/TPO Ritchey-Chretien 10, 12, 14 e 16 pollici

Availability: Order

Regular Price: €3,849.00

Special Price €3,780.00

if you pay by bank transfer €3,666.60

Details

GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube and ESATTO 3": main features

GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube is perfect for astrophotography is perfect for those looking for a quality telescope for deep-sky astrophotography at an incredible price. Thanks to the carbon tube, the GSO RC 304mm f/8 not only is more stable and lighter but also it has higher thermal stability, so it keeps the focus point more accurate during long expositions. Supplied with ESATTO 3" microfocuser with high precision and load capacity. Designed to fully illuminate even the largest sensors (up to FullFrame 24x36mm), it has a corrected field for sensors up to APS-C and offers an optional field flattener for sensors up to FullFrame.

  • GSO telescope is a Ritchey-Chretien 304mm f/8 with truss carbon fiber tube
  • ESATTO is the best robotic microfocuser, perfect for astrophotography

 

GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube and ESATTO 3

 

 

GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube and ESATTO 3": the advantages

The GSO is a true Ritchey-Chrétien reflector telescope. Contrary to Maksutovs or Schmidt-Cassegrains which have spherical mirrors and need image correctors, and contrary to Newtonians that need coma correctors, the RC system is a well corrected photographical instrument that uses only mirrors (no false colour!) and does not require any corrector with many cameras. The RC is a true reflection system without lens corrector and with a really bright image. The RC has a concave hyperbolical primary mirror and a convex hyperbolical secondary mirror. The resulting image correction throughout the field as well as the sharpness on the optical axis are superior to other telescopes. Both mirrors are ground and polished under pricision computer control to diffraction-limited or better surface accuracy. Most similar telescopes have a movable primary mirror cell. When focusing the telescope the entire mirror is moved. Unfortunately this technique invariably leads to a certain amount of image shift. Most manufacturers have controlled this problem to a fair extent, but the remaining image shift can be quite distracting for astro-imaging, particularly with cameras with a small sensor size or when taking series of frames with several hours of total exposure time. In the GSO RC the mirror sits in a fixed mirror cell and focus is changed with a separate focuser. This eliminates the problem of image shift completely. Lightweight yet strong carbon fiber truss tubes have low thermal expansion characteristics. Shifts in focus due to temperature changes are minimized because of this design. The trusses are also designed to flex equally, keeping the optics in collimation regardless of the position of the telescope.

GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube and ESATTO 3
GSO Ritchey-Chretien 304mm f/8 with truss carbon fiber tube and ESATTO 3" and the following optional accessories: EAGLE with PLUS dovetail clamp installed above the telescope.

 

 

ESATTO: the more advanced and affordable robotic microfocuser!

ESATTO is the new generation robotic focuser that you control by any Windows computer by connecting it to a USB port, or via WiFi by using ESATTO app on your smartphone or tablet with the Virtual HandPad! On the camera side, ESATTO has a M81x0,75 male thread to connect and manually rotate many cameras and accessories by adding the optional adapters with stop rings. ESATTO 3" has 25mm of focuser tube travel, a 8kg payload capacity and an incredible resolution of 0,04 micron per step (and this is why we call it ESATTO)! And you can also expand ESATTO features by adding the ARCO robotic camera rotator!

 

 

GSO Ritchey-Chretien 304mm f/8, truss carbon fiber tube with ESATTO 3": scope of delivery

- Optical tube Ritchey-Chretien 304mm f/8

- Truss carbon fiber tube

- ESATTO 3" robotic microfocuser

- Double Losmandy dovetail bar (below and above optical tube)

- M117 extensions to reach focus

Technical specifications

Optical Design Ritchey-Chrétien
Optics Primario e secondario iperbolici
Diameter (mm) 304mm
Tube diameter -
Focal Length (mm) 2432mm
Focal Ratio f/8
Field flattener/corrector Not included (optional)
Optical Tube Carbonio
Obstruction ?
Focuser ESATTO
Eyepiece holder No
Weight 24 Kg
Hard/soft case No

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.

  1. Be the first to review this product

Write Your Own Review

How do you rate this product? *

  1 star 2 stars 3 stars 4 stars 5 stars
Vote