Hi all, here is my last RR Lyr observation. Weather was very bad in the last weeks...
Relevant observation data:
- JD 2456225
- Date: 2012-10-24
- Observer: Paolo Berardi
- Exposure time: 300s
- Number of spectra: 31
- Duration: 2.5 hours
- Instrument: C9.25 - Lhires III 1200 - SXVR-H694
- WL range: 6330-6800 A
- R: ~5000
Animation series in cropped range 6500-6700 A:
2d dynamic spectrum of h-alpha line in cropped range 6542-6581 A:
Time evolution of h-alpha line (24 spectra in cropped range 6520-6605 A)
Umberto Sollecchia simultaneous observation with Star Analyser 100:
Ciao!
Paolo
Maximum of 24/10/2012
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- Posts: 1431
- Joined: Mon Sep 26, 2011 6:59 pm
- Contact:
Re: Maximum of 24/10/2012
Paolo your spectra are really exceptionnal of quality!
Fine setup Lhires III + C9. Could you precise the slit width (23 microns, 35 microns, ...) ?
Christian B
Fine setup Lhires III + C9. Could you precise the slit width (23 microns, 35 microns, ...) ?
Christian B
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- Posts: 578
- Joined: Thu Sep 29, 2011 10:51 pm
Re: Maximum of 24/10/2012
I'm glad for this Christian, your advices in OHP were very useful!
I'm quite happy with the setup. C9 is still easily manageable and it seems to me has a sufficent light collection.
For the efficiency I think most comes from the use of the sensor ICX694 in binning 2x2 mode and 35 micron slit (used up to now for my RR lyr observation). About resolution, I have noticed a considerable difference between the results obtained with the 35 um and 23 um slit aperture. But in my test in the same evening on AZ Cas I have detected a light loss of about 30%. I'm actually trying to capture an AZ Cas spectrum with 23 microns slit (2400 l/mm grating). When I reduce data I'll show you the result. I would like to know if, with AZ Cas, it's worth using the 23 um slit with my setup.
See you!
Paolo
I'm quite happy with the setup. C9 is still easily manageable and it seems to me has a sufficent light collection.
For the efficiency I think most comes from the use of the sensor ICX694 in binning 2x2 mode and 35 micron slit (used up to now for my RR lyr observation). About resolution, I have noticed a considerable difference between the results obtained with the 35 um and 23 um slit aperture. But in my test in the same evening on AZ Cas I have detected a light loss of about 30%. I'm actually trying to capture an AZ Cas spectrum with 23 microns slit (2400 l/mm grating). When I reduce data I'll show you the result. I would like to know if, with AZ Cas, it's worth using the 23 um slit with my setup.
See you!
Paolo