Scattered Thoughts . . .

L ittle by little, I've been working on building a custom homebuilt, non-commercial spectroheliograph for solar astronomy.  A spectroheliograph is a scientific instrument used for imaging/graphing the sun in one specific wavelength at a time.  It is not an instrument for visual observations though.  It is used to capture any single wavelength between 400-700nm at a very narrow 3 angstroms (0.3nm) in graphical waveform.  Then specialized software is used to transpose that waveform into an image.   This particular spectroheliograph was designed by Christian Buil in France.  He kept this particular design small and relatively simple for do-it-yourself amateur astronomers such as myself.  I believe he also has spectroheliograph designs that are research-grade and costing tens of thousands of dollars.  I opted for the dirt-cheap do-it-yourself and a-little-more-difficult route to build what is considered a beginner spectroheliograph.  It is still a scientific instrument but, in order to

I finished my homemade telescope pier extension project today and it seems to be working as planned. There isn't a whole lot in life that is more satisfying than designing something in sketches in a notebook, then building each individual part yourself, then assembling all the parts and finding that everything works just as designed and planned! My primary problem that prompted this project was that my longer telescopes would hit the tripod legs when viewing almost straight upward.  Also a factor in my decision is that my astronomy tripod isn't tall enough for my longer refractor telescopes which meant I would need to sit down very low on the ground to see into the eyepiece.  I needed a pier extension to raise the mount and telescope higher.   Some may ask why I don't just extend the legs fully to gain some overall height but this is a bad idea for two reasons.  First, it will do nothing for me to resolve the telescope colliding with the tripod legs.  And next, the more yo

I've moved on to the second phase (and unplanned phase) of our garden window project by working on refinishing the window sashes for this window.  Our homebuilt garden window has a couple of removable window sashes that we can insert into the frame for colder weather. In the warmer months, I will leave the sashes out (as seen in the photo to the right) so the view is wide open with no obstructions. These sashes were in pretty lousy shape. It seemed silly to design and build this nice new garden window and then just install the same old worn-out sashes when the weather cools down and during the longer part of the year when we need extra insulation. I've been experiencing this throughout our renovations... you know... when you make a clean spot, everything else that didn't look so badly before you made a clean spot suddenly appears horrendous... I needed to do something about these window sashes.  I also needed to replace the window sill... something else I hadn'

As has been the norm here for the past few months, it is dark and dreary outside this morning. I'd like to get back to working on our garden window but I'm not going to pull all my tools outside when it appears as though it will rain at any moment.   On the positive side, it is far cooler out there today! The humidity seems to be at far more tolerable levels too!   I should be able to get out there to do some work in another hour or two... I'm looking forward to making more progress on this window project.