About the Lunt Solar Systems - Lunt Solar Imager...
We get asked all the time which camera is best with the Lunt Solar Telescopes and Lunt Solar Filters, and now we can say ours! Below are the details of the Lunt Solar Imager (LSi). Lunt will provide full support and instructions for Solar Imaging.
The Lunt Solar Imager camera uses a 2/3" format CCD which is ideally suited to fit the whole of the sun on to the CCD in one image. It also has larger pixels which have larger full-well depth and incredibly low read noise which allows the CCD Camera to produce a very high dynamic range. It uses a 16bit A/D converter giving 65,536 grey levels compared to 8bit (256 grey levels). To get the best image from an 8 bit camera you need to take lots of over exposed images and average them together to build up the good data on the prominences and then take a lot of images, under exposed, to get the surface detail, and then add all the frames together. Because this LSi camera has such a large dynamic range, you are able to capture both the prominences and the surface detail in one image and with the exposure times so low, you can almost freeze the seeing conditions.
Lunt Solar Imager (LSi)
Custom Lunt Solar Windows Software (also compatible with standard nighttime software for night use)
Lunt Solar imaging instructions for use with the Lunt Solar scopes
USB 2.0 Cable
Auto-Ranging Switch-Mode 100V - 240V AC Power Supply
1.253 Push-Fit Adapter
23 Push-Fit Adapter
Lunt Solar Imager Features...
- The Lunt Solar Imager utilizes a monochrome Sony ICX285AL Exview HAD CCD
- Exceptionally low dark current, extended IR response and vertical anti-blooming
- Regulated set-point cooling supply with single stage thermoelectric cooler
- Allows for a CCD temperature of up to -30C below ambient
- No bad columns, no dead pixels, no more than 6 ''hot'' pixels
- Quality crafted 75 x 70mm red anodized aluminum barrel
- 42mm ''T2'' thread at the CCD side and input/output ports at opposite.
- Includes the Custom Lunt Solar Software (also compatible with standard nighttime software for night use), and Lunt Solar imaging instructions for use with the Lunt Solar scopes.
Lunt Solar Imager Specifications...
CCD type: Sony ICX285AL Exview HAD CCD with ultra low dark current, extended IR response and vertical anti-blooming.
CCD quality: Grade 1 or better - No bad columns, no dead pixels, no more than 6 ''hot'' pixels (saturated in
CCD Full resolution Pixel data: Pixel size: 6.45uM x 6.45uM, Image format: 1392 x 1040 pixels
CCD Image area: 8.98mm (Horizontal) x 6.7mm (Vertical).
Spectral Response: QE max at 540nM (~65%), 50% roll-off at 400nM and 750nM.
Readout Noise: Less than 7 electrons RMS - typically ONLY 5 electrons!
Full-well capacity: Greater than 23,000 e- (un-binned)
Anti-blooming: Overload margin greater than 800x.
Dark current: Dark frame saturation time greater than 100 hours. Less than 0.02 electrons/second @ + 10C ambient.
Data format: 16 bits.
System gain: 0.45 electrons per ADU
Computer Interface: Built-in USB 2.0 compatible interface.
Image download time: Typically 0.6 seconds full resolution using USB 2.0, approximately 2 seconds with USB 1.1.
Power requirements: 115VAC / 240VAC @ 12VA, or 12VDC @ 750mA max.
Cooling system: Regulated set-point cooling supply with single stage thermoelectric cooler to give a CCD temperature of up to -30C below ambient.
Size: 75 x 70mm red anodized aluminum barrel with 42mm ''T2'' thread at the CCD window end & input/output plugs at rear.
Weight: approx. 300g
Lunt Solar Systems Product Number: LSI
Customer Note: Telescope is not included.