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Posts posted by Merlin66
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Look at Corono to give a black disk to enhance your proms.
Recommended.
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I use EQMOD on both my HEQ5 and NEQ6PRO with CdC and PHD2.
I still use the ST-4 cable for guiding (C11@f10). Why? It works well for me, why change?
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I use an ASI 174 and ASI 1600 for solar imaging with my SM60/ED80, x2.5 PM.
I work at Unity gain (174 = 189 gain, 1600 = 139 gain) and Gamma = 50.
I never touch these again.
Using the exposure I push to get the histogram up to around the 90% mark.......
For proms, I leave the Gain and Gamma untouched but push the exposure to show the prom.....maybe, just maybe, for the fainter proms I'll push the Gain a few points......
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Matt,
Well done, looking better.
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Matt,
A bit over cooked...the actual surface is smoother and more flowing......ease off the wavelets and contrast.
Just my 2c.
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The #7315 1.25” non rotating helical is $99.....
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The Borg 1.25” version of the helical focuser works well.
I use it on PST mods, the Spectra-L200 and the spectroheliograph.
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I've been using the ASI 174 mm for a while now (definitely needs the T2 tilter) -would work well for you - fast frame rates....
I wanted to get a better FOV and went for a ASI 183mm, BUT it turned out not to be suitable for solar Ha imaging (!!!!) replaced by ZWO, and I went for the ASI 1600mm uncooled.
Just my 2c
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I added a SW electronic focus motor to all my solar scopes......
This allows you to comfortably concentrate on the image while tweaking the focus.
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Louise,
You'll find in normal usage that the Hi-res, limited wavelength, is used to record specific detail at nominated target wavelengths - Ha, Hb or some other target. Generally there's no need to combine them.
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Louise,
Yes, you can combine spectral profiles to present a larger coverage - BASS can do this .
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I believe the finished spectrograph is around 1Kg, you then need to add the guide camera and the imaging camera.
I would work on 1.7 to 2Kg loading on your telescope/ focuser.
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Louise,
I have entered the LowSpec design into the SimSpec spreadsheet, if you use the data you have it should give you a reasonable first approx of the capabilities and spectral coverage.
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IMHO, a 600 l/mm grating would be a good compromise. You can always change it later when you gain more experience.
Have you decided on what cameras you'll use? Guiding and acquisition?
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Buil's Vega atlas provides a very good reference source for these Atmospheric bands.....
http://www.astrosurf.com/buil/us/vatlas/vatlas.htm
See also the links given here:
http://www.astronomicalspectroscopy.com/process.html
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Louise,
Ah, I see you're calling up a 6mm thick grating....I always used the 9.5mm....
Ken
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Andrew,
Looks like you're off to a good start!
Ken
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Louise,
Surplus Shed don't supply gratings...
I thought Paul's LowSpec required a 600 l/mm grating?
I buy all my gratings from Optometrics (now Dynasil) - highly recommended.
Ken
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Vlaiv,
The bottom Rochi definitely shows "wavy" lines........
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Chris,
Neat and functional, I would say. It obviously does the job. Well done!
I was lucky to find a 100mm diameter FS5 20 deg prism and mounted it into a PVC joiner, see images. It's a bit difficult to see as the prism doesn't show up too well.
This is then mounted on the ED80. I also, like you, use an off-set finder.
Ken
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No, not easily. The tube has to be cut then you need to manufacture an adaptor to hold a new prism assembly.
Much easier to find a s/h RACI version.
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Nigella,
Look in the Solar Scope mods section. There are a few members using the Quark as a double stack.
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A good solution....
I have to ask, how do you intend to guide during your exposures?
An ASI 120 or similar would do the job.
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Chris,
I’d be very interested to see how you mounted and aligned your objective prism.
I modified a PVC pipe adaptor to hold the prism and fit the scope.
31.10.19 And so the journey begins again.
in Imaging - Solar
Posted · Edited by Merlin66
No, weiller’s CORONO software. A bit difficult on the iPad to find the link, but Google will have it.
http://sweiller.free.fr/Softwares/Corono/corono.html