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On 2003.10.23, at 06:51 PM, DWest61506@aol.com wrote:
> The Optec SSP-4
> (http://vsnet.optecinc.com/astronomy/products/ssp-4.html) is very
> similar to operation to the SSP-3. It comes with two filters, J and
> H. I took the V838 Mon with a clear filter. The InGaAs detector in
> the SSP-4 has a spectral characteristic similar to the H band, but you
> have to color correct. Dirk Terrell has started putting a web page
> together for the SSP-4 http://binaries.boulder.swri.edu/binaries/ir/.
> In summary I would say that the SSP-4 is an excellent instrument and
> you are correct when you said "the infrared era has begun for amateur
> astronomers." It is an exciting time.
Thank you for writing details about SSP-4 photometer.
I learned that there are many targets for SSP-4 in Dr. Terrell's lists.
I am also interested in IR photometry since I heard Dr. Henden's talk
about SSP-4 in AAVSO meeting last year.
But I am most interested in faded novae those are visible in IR but not
visible in visual wavelength.
So, I want an 2D IR imager.
I also know that 2D IR imager is hard to build and use for amateur.
Seiichiro
Kiyota
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