AG Optical Systems Imaging Dall Kirkham Astrograph - 17"
Imaging Dall Kirkham (iDK) astrographs are high resolution instruments with outstanding on and off axis performance across a 60mm field of view. By combining large aperture, medium focal ratio, corrected optics in a lightweight, stiff, and thermally stable carbon fiber tube AGO has created an instrument capable of capturing stunning images of our universe at the most aggressive pricing on the market.
An optional quartz upgrade is now available for all iDK telescopes. Quartz' extremely low coefficient of thermal expansion allows the figure on the optics to remain stable while ambient temperatures vary. This means you will spend more time imaging and less time waiting for the optics to stabilize.
FEATURES
- Optics figured and quality tested as a system. Optional quartz upgrade for the ultimate in optical stability as ambient temperatures vary.
- Fast F6.7 system designed and baffled to cover 16803 size chip. Click here to see CCD Inspector analysis of a 17" iDK over a 43' x 29' field of view.
- Over 5" of back focus to support almost any combination of imaging components.
- Excellent coma free, astigmatism free, flat field performance over 60 mm image circle. Ckick here to see the performance of a 12.5" iDK at the corner of a 2" diagonal chip (36mm x 36mm array).
- RMS spot diameter* less than 9 microns across 55 mm image circle (we state RMS spot size in diameter rather than radius as do other manufacturers).
- Highly robust, precise Optec TCF-S3i focuser is standard. Optional FLI Atlas focuser.
- Outstanding field illumination across big chip cameras. Click here to see an unprocessed iDK image taken by a 16803 CCD camera that has not been flat fielded.
- Carbon fiber truss tube engineered to provide rigidity and thermal stability.
- Optional AGO Thermal Control System for PC-based, automatic control of cooling fans, primary heater, and secondary heater.
- CNC machined components with stainless steel fasteners.
- Best in class customer support and pricing.
SPECIFICATIONS
Model
| AGO-iDK17
|
| Aperature | 17"
|
Focal Ratio
| 6.7
|
Focal Length
| 114" |
Back Focus
| 5" w/ Optec TCF
|
OTA Type
| Truss |
Primary and Secondary Mirrors
| Supremax 33 substrate. Optional quartz upgrade
|
Fans (blowing air into OTA)
| 3 x 80mm
|
Secondary Obstruction
| 8.2" |
Focuser (included)
| Standard: Optec TCF-S3i 3-inch temperature compensating digital
|
| Corrector | 85mm two-element broadband AR coated
|
Mirror Coatings
| Enhanced Aluminum
|
| Baffling | Primary and secondary baffles, baffled for 16803 size chip
|
| Dovetail | Heavy-duty, Losmandy "D" compatible dovetail plate included
|
Tube Length
| 42" |
| Dimensions | Here |
Tube weight w/ dovetail and focuser
| Approx. 100 lbs.
|
| Price | $20,595 |
Quartz Upgrade
| $2,500 |
AGO Thermal Control System
| $975 |
| Shroud | $140 |
Piggyback Dovetail Plate
| $265 |
| Spacers | Contact for specifics
|
| Delivery | Approx. 3 - 4 months
|
| Shipping | Contact for estimate
|
Please see the "Additional Information" page for ordering and warranty information.
Download the AG Optical Systems Imaging Dall Kirkham manual here.
