Pro Astrograph 254/1016 OTA Telescope

Omegon Astrograph f/4: for unforgettable astrophotos
What telescope allows you to get incredible images with minimal effort? With an Omegon Astrograph it is easier than with normal telescopes. Because? The answer is obvious: an f/4 focal ratio means a large amount of light with a short exposure time. Enter the world of deep sky photography and admire faint galaxies or details in hydrogen nebulae. The Omegon Astrograph will take your astrophotos to another level...

Summary of advantages:

• Astrograph f/4: telescope with an ultra-fast aperture rate for minimal exposure times
• Short design suitable for medium frames
• Large field of view for large objects: illumination of approx. 24mm
• Parabolic main mirror with 94% reflection for clear images
• Large secondary mirror - good lighting with DSLR cameras
• Stable 2" Crayford eyepiece with 1.25" adapter and 1:10 reduction
• Faster cooling = faster viewing: fan for main mirror

Main mirror with f/4 and 94% reflection

Astrographs are ideal for visual observations, although their potential is only fully realized with astrophotography. With an f/4 focal ratio, they are one of the "fastest" Newtonian telescopes, as they allow you to take photos with a shorter exposure time.

The secondary mirror and main parabolic mirror of BK7 have a reflection capacity of 94%, offering clearer and richer contrast images. If compared to the "usual" reflection of 88%, the difference is more than evident.

No shadows, just light: large secondary mirror

Attach your DSLR camera or a modern CCD camera to the telescope and enjoy impressive illumination over a very wide field of view. Thanks to its large secondary mirror (see below) you won't notice any shadows. It is perfect even for observation with 2" wide field eyepieces.

Images with fewer errors, more satisfying images

This telescope stands out for its design and short focal length. This astrograph is about 20% shorter than f/5 optical tubes, so it can also be attached to medium mounts. This way you will have good equipment without the need for heavy and expensive frames.

Another advantage is its short focal length, which makes this astrograph the perfect telescope for observing wide deep sky objects. This system corrects tracking errors better than telescopes with a longer focal length. With it you can capture impressive snapshots with little effort.

3" eyepiece holder with linear ball bearing: to illuminate gigantic fields of view

Instead of the conventional ball bearing, this eyepiece holder is equipped with a Linear-Power system. What advantages does it have? A stainless steel rail ensures considerably more stable sliding. Your accessories will no longer pitch or move.

With an inner diameter of 72 mm, the tube offers shadow-free illumination ideal for large, bright telescopes. Also perfect for full format sensors. The ideal eyepiece holder for your wide field camera.

In comparison, a 2" eyepiece holder would show ugly shadows around the edge of the image. A 3" eyepiece holder means more freedom to enjoy larger, longer images. As it should be!

Although this is not all that this eyepiece holder offers:

• Dual Rate 1:10 reduction will help you focus on celestial objects more precisely. - A 2" to 1.25" adapter: for all eyepieces and adapters
• A laser-etched scale so you never lose focus position
• Only 82mm height and 50mm adjustment range
• 74x0.5 mm thread for adapters or filter wheels
• Friction adjustment
• 82mm height

Greater observation agility: fan for the main mirror

Just a slight, inconspicuous hum, but with a huge effect: the integrated 12V fan cools the main mirror up to 50% faster, so your telescope can reach optimal image quality much sooner. Long waits are over!

Supply volume and other information of interest:

• 10" OTA Astrograph with 88mm Secondary Mirror
• Secondary mirror marking for ease of adjustment
• Vixen 22cm Prismatic Rail and Tube Clamps
• 2" extension sleeve, 35 mm
• Tube length: 980mm, tube outer diameter: 303mm
• 12V fan

Specifications

Optical system
Guy	Reflector
Type of construction	Newton
Opening (mm)	254
Focal length (mm)	1016
Aperture ratio (f/)	4
Resolution capacity	0.45
limit value (mag)	13.8
Light collecting capacity	1320
Maximum useful magnification	508
Tube weight (kg)	14.8
tube material	Steel
Tube length (mm)	980
Bonus	Aluminum and silicone dioxide
Tube diameter (mm)	303
Tube construction	complete tube
Reflector
Main mirror design	parabolic
Secondary mirror obstruction	35
Secondary mirror diameter (mm)	88
Primary mirror vent	Yeah
Main mirror material	BK7
Reflectivity	94
Telescopic eyepiece tube
Type of construction	Crayford
Reduction	Fine movement 1:10
Mount
Type of construction	OTA
Frame type	rimless
GoTo	No
Accessories included
Several	Main mirror ventilation
Extension tubes	Yeah
Clamps	Yeah
eyepiece adapter	1.25" & 2"
Dovetail plate	Vixen-Style
In general
Series	Pro Astrograph
Total weight (kg)	14.8
Applications
Moon and planets	Yeah
Nebulae and galaxies	Yeah
Nature observation	No
Astrophotography	Yeah
Sun	not recommended (only with appropriate sunscreen)
Recommended for
Beginners	No
Advanced	Yeah
Observatories	No