Vernikos-Eugenidis optical CCD imaging camera (VEC)
This camera, funded through the “ARISTEIA” program undertaken by the “X-ray & Cosmology group” and the “Eugenides Foundation”. It is constructed by the Astronomical Research Cameras, Inc. and it consists of a 4096 x 4096 (15 microns) Fairchild, back illuminated chip. It is a liquid nitrogen CCD, giving a fov of 10’x10’ (side port).
Model: Astronomical research cameras, Inc, GENIII
Status: To be commissioned
Detector: 4kx4k Fairchild
Scale (“/pixel): 0.17
CCD sensor: Fairchild imaging CCD486, back-illuminated, Grade 1
CCD Format: 4096×4096, 15 micron pixel size (~0.17″)
CCD field of view: 10 arcmin
Installation: AGU’s side port (current use ~10′ FOV)
AGU’s side port + focal reducer (future use ~30′ FOV)
Camera filter wheel
The filter unit contains 2 filter wheels with 6 filter stacks each with an optically free diameter of 62 mm. The filter unit can be attached to the four side ports and to the main port.
- Wheel 1 is free for use by the astronomer with changeable filters with a thickness up to 5mm. There are 6 filter adapters, which can easily be disassembled from the wheel.
- Outside of the filter unit the required filter can be mounted. A protection ring fixes the filter inside the adapter. Then the adapter can be assembled back to the filter wheel by fixation of one screw.
- Wheel 2 is occupied with filters U, B, V, R, I and a neutral glass with a thickness of 3mm and an optically free aperture of 64 mm.
Aristarchos filters for CCD imaging
|Emission line||CWL (Å)||BW (Å)||T max (%)||Diameter (mm)|
|[O II] 3726+ [O II] 3729||3731||25||69.91||64|
|He II 4686||4690||30||76.57||64|
|[O III] 5007||5011||30||83.91||64|
|[O III] 5007 gal. set||5035||80||85.34||64|
|[O III] 5007 gal. set||5100||80||88.33||64|
|[O III] 5007 gal. set||5200||80||88.35||64|
|[O I] 6300||6304||30||87.22||64|
|Hα 6563+[N II] 6583||6578||40||88.02||64|
|[N II] 6583||6588||17||79.60||64|
|[S II] 6717 + 6731||6727||40||81.60||64|