A brief update covering some ongoing projects…
The compact stellar spectrograph (LRCSS) has been coming along nicely. I needed to cut a slot in one of the M42 extenders to accomidate the imaging lens focusing adjustment. Turned out OK although not my finest metal work…Here’s a few current images of what I’ve got.
In a future post I’ll capture a few additional photos of the spectrograph construction that I neglected to provide above.
Next I decided against doing a part 2 of the RSpec spectroscopy software review. Turns out, at least on my current Win7 machine, the needed DirectX drivers (for the ZWO camera) did work but not terribly well. The software video controls are a bit simplistic for my tastes. I think I prefer using Sharpcap for acquiring astro images and video captures. For $15US one gets the additional polar alignment feature as well as dark frame subtraction during live captures and live histogram views. It works well, although doesn’t provide the live spectral profile view which is nice. I’m back to VSpec (freeware) I’ve used in the past for spectral analysis along with a relatively newish program called BASS.
What’s next…Oh I assembled a rather simple illuminated cross hair for the right angle 35mm finder I recently put together to make finder viewing a bit less of a yoga exercise and more of a comfortable experience. And it does!
Next I purchased a new clock drive for the imaging mount. This being an Orion EQ-1M crystal controlled single-axis (RA only) sidereal rate drive. Arrived the other day. The issue with this particular drive for my mount is that it’s made for one of Orion’s EQ mounts with a 100 teeth RA gear as opposed to my own mount’s 144 teeth gear. This I was aware of from my research and doesn’t present a difficult one. It means that the new drive will run a bit slower in drive rate when using my present system (~ 2/3rd the speed .The crystal in place is a 3.58MHz variety and needs to be replaced by ideally a 5.12Mhz component. I have in my bins some 5.068Mhz crystals which will get me pretty close till I locate an ideal replacement part…
And I think that’s my short story for today…thanks for looking