Ruggedized Imaging Dall Kirkham Telescope
Imaging Dall Kirkham (iDK) astrographs are
high resolution instruments with excellent on and off axis
performance. The Ruggedized version of the iDK uses a high strength,
high stiffness, lightweight, and thermally stable carbon fiber
composite tube with a Nomex honeycomb core to create a tube assembly
capable of handling high acceleration and slew rates.
AG Optical Systems uses high quality,
prepreg carbon fiber and overexpanded Nomex honeycomb core materials
to build our tubes. Each tube is made using a multi-step
process which includes laying up multiple layers of prepreg carbon
fiber material, several vacuum bagging steps to ensure excellent
compaction of the carbon fiber plys and core, and a computer
controlled curing process using AG Optical Systems' large curing
oven.
Features
| Ruggedized Imaging Dall Kirkham
Telescope Features |
- Optics figured and quality tested as a system
- Fast F6.7 system designed and baffled to cover large
chip camera systems
- 11" of back focus to support almost any
combination of imaging components (dependent upon
focuser selected)
- Excellent coma free, astigmatism free, flat field
performance over 70 mm image circle
|
- Outstanding field illumination across big chip
cameras.
- Carbon fiber composite tube with Nomex honeycomb
core to create a very stiff, strong, lightweight tube assembly
- Multiple spacer and camera adapter options
- CNC machined components with stainless steel
fasteners
|
System Specifications
|
Model |
iDK12.5R |
iDK17R |
iDK20R |
| Aperture |
12.5" |
17" |
20" |
| Focal ratio |
6.7 |
6.7 |
6.7 |
| Focal
length |
83.5" |
114" |
134" |
| Back focus |
5.25" with Optec TCF |
5" with Optec TCF |
5" with Optec TCF |
| OTA type |
Ruggedized
Carbon Fiber Composite Tube with Nomex Honeycomb Core,
multiple finish options available |
| Primary
mirror |
Supremax
33 substrate |
|
Fans (blowing air into OTA) |
3 x 60mm fans |
3 x 80 mm fans |
4 x 80 mm fans |
|
Secondary obstruction |
6.7" |
8.2" |
9" |
|
Focuser (included) |
Standard: Optec TCF-S3i
3" temperature compensating digital focuser
Customizable options to meet customer requirements |
| Corrector |
two element,
broadband AR coated |
| Mirror
Coatings |
Enhanced
Aluminum |
| Baffling |
primary and secondary
baffles, baffled for 16803 size chip |
| Dovetail |
Massive, thermally
compensated dovetail plate included |
| Tube length |
30" |
42" |
47" |
| Tube weight
with dovetail & focuser |
approx. 42 lbs |
approx. 90 lbs |
approx. 130 lbs |
|
Price |
$11,695 |
$22,595 |
$30,995 |
| AGO
Thermal Control System |
$975 |
$975 |
$975 |
| Shroud |
$125 |
$140 |
$165 |
|
Piggyback Dovetail Plate |
$225 |
$265 |
$305 |
| Delivery |
approx. 3 - 4 months |
| Shipping |
contact AGO |
12.5" iDK Ruggedizd Tube Telescope
Section of Carbon Fiber Composite Nomex
Honeycomb Core Tube
Carbon Fiber Mirror Bucket
Large Volume Curing Oven