Carnegie Observatories Spectroscopic Multislit and Imaging Camera (COSMIC) Technical Specifications

View the original specsheet.

Status: Public instrument

Contact: P200 Instrument Support at Palomar

1. Telescope

Prime focus; with Wynne corrector.

2. Detector

• Tektronix 2048 × 2048 thinned CCD.
• Pixel size: 24 µm.
• Readout: Table below is an example, user selected binning now available 2008.

3. Operating Modes

4. Offset Guider

2 × 30′ field.

5. Mounting Base

Rotational accuracy < 2′.

6. Slits, Grisms, Filters

• Slits: Slots for 6 slit masks (masks on photographic film; 2 weeks minimum to produce).
• Grisms: Slots for 4 grisms or narrow-band interference filters. Note: there is an Hα filter in the grism wheel.

Grism	Blaze	Dispersion	Resolution
600 l/mm	4800 Å	1.6 Å/pixel	1″ = 4 Å
300 l/mm	5500 Å	3.1 Å/pixel	1″ = 8 Å

• Filters: Slots for 7 filters.

Filter	λc	Δλ
g	5000 Å	800 Å
r	6550 Å	900 Å
i	8000 Å	1800 Å
B	4300 Å	1000 Å
V	5400 Å	1000 Å
R	6200 Å	800 Å

• User filters:
• Diameter: 4 inches.
• Thickness: 2 mm (min); 8 mm (max).

7. Instrument Control

• Labview Based GUIs running on control room Linux box.
• IRAF Data Processing and scripts.
• FITS file output to disk.