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Hi Andy,
I use MaximDL for spectrum image acquisition. It does not name the files in a way that ISIS can work with so I wrote this little script a few years ago to rename the files to work with ISIS. What it is actually doing in this case is removing leading ‘0’s in the sequence numbering to match ISIS requirements. I put a copy of the script which I call ISSIS-rename.ps1 in the folder with the raw spectrum files and then right-click on it and choose Run with PowerShell. I would imagine that you could modify this script to work with the files created by your acquisition software. Hope this helps.
Woody Sims
Dir | Rename-Item –NewName { $_.name –replace “-0“,”-” }
Dir | Rename-Item –NewName { $_.name –replace “-0“,”-” }
Dir | Rename-Item –NewName { $_.name –replace “-0“,”-” }
Hi,
Kevin, you mentioned R Mon.
I just uploaded my LISA spectrum from 2018-12-04.306 for R Mon to the BAA spectroscopy database. OI and SII emission lines as well as FeII emission lines are quite prominent. The OI lines appear to display a P Cygni profile. Not enough resolution for me to tell on the SII lines.
Woody Sims
Absolutely Brilliant Tony! What does the Vernier control at the top of your image of the spectrograph adjust? Is this how you tuned the instrument to Halpha?
Cheers!
Woody
Hi Robin,
Thank you for the RA and DEC coordinates. When I enter yours into the AAVSO Variable Star Plotter the 12.0 star is dead center. This is the star I guessed from the Sky Safari coordinates and was able to collect spectrum data on Friday night.
I took 8 300sec exposures. I used HD183324 as a Reference star from atmospheric and Instrument correction. Looking at the data It would have benefited from longer exposures which I may try next time. See spectrum in Tim Lesters PlotSpectra.
See attached AAVSO plot.
My friend Bob Buchheim suggested we get out Gray and Corbally “Stellar Spectral Classification” to see if we could try and classify this target. We concluded that it is likely an early G star. But given this is a double star then it is hard for us to separate out the K or M component as Paul suspected in the spectrum. The primary and secondary minima that Paul described are to my thinking very small. Wondering if this is just sort of a grazing orbit where we are seeing both stars all of the time?
Cheers!
Woody
Hi Paul,
I just saw your post late last evening here in Arizona. I tried to take a quick peek at the target with my Shelyak LISA spectrograph but could not reliable identify the target star in my auto guider image before I hit my Horizon limit. The FOV is only about 8’x6’. So no spectrum. The J2000 coordinates I used were RA 18 20 12.29 and DEC +07 15 59.20 taken from Sky Safari 6. Perhaps you can provide me with more accurate coordinates and I will try to take another look.
Cheers!
Woody Sims
Hi Tony,
I used a design similar to that Stewart recommended. My roll-off observatory is 8’x10’. Due to rules stipulated by a higher power that you met at the BAA meeting, I had to split the roof into two halves each moving off in opposite directions. I purchases (2) 20’ pieces of angle iron. I was able to arrange free delivery as I was nearby to where they were making another delivery. Of course a bicycle could be a funny option depending on how far you would have to go:) I went with (8) 4” cast iron v-groove wheels with ball bearings. I cleaned up the angle iron and applied two coats of a Derusto brand paint. It is wearing off a bit but no problem so far after 3 years. I might reapply at some point with a brush. The wheels are rated at 800 pounds each. One wheel has a bit of rust but cosmetic only. I put a wood block at each track end as a stopper. I used some stainless steel cap screws every couple of feet to hold the rails in place on treated 4”x4” wood support beams, which on the outrigger ends are supported by treated 4”x4” treated posts set on concrete blocks with adjustable steel screw brackets. Of course as you know I live in the desert and you might encounter a wee bit more moisture. Each roof section rolls very easily.
Cheers!
Woody
