Scattered Thoughts . . .

The new saddle for my new SolarQuest mount arrived this morning...  finally (USPS shipping is horrendous) ...  so I spent a little time upgrading the mount this morning.  I did a bit of work upgrading it yesterday too but I had been waiting for this new saddle to arrive for quite a while and I finally got that done this morning. In the photo, below, you can see the original saddle that came already installed on the SolarQuest mount.  I've had some bad experiences with this type of saddle...  the cast aluminum tends to crack and break eventually, the single bolt damages dovetail bars, and the single bolt isn't a secure as it should be...  so I wanted to replace it with a better one to keep my telescopes as secure as possible. In this next photo, you can see the new replacement saddle.  It is a much heavier duty saddle and it is actually a large clamp to hold the telescope rather than just a single bolt holding the telescope in place.  Replacing this saddle was easy when the new

As expected, April's weather forecast has changed.  Unfortunately, it has not changed in the way we need.  Now, rather than there being only three clear days forecast for April, there are zero clear days in all of April!   It is not looking good for any sort of astronomy in April.   Of course, we could get extremely lucky and get a few hours of clear skies in the early afternoon of the eighth...  from 2pm to 4:30pm...  I'm not holding my breath though.

T oday is an exceptionally rare clear, sunny March day so I immediately collected some astronomy gear to bring outside.  There are a few things I want to try before the solar eclipse next month.  Really, I need all the practice I can get.  The weather has been so miserable for the past year that I haven't done any solar astronomy in almost a year! The temperature this morning was still only in the upper 30s (it is early March, after all) but I was comfortable in just a fleece sweatshirt.  Being comfortable helps.  Well...  I wasn't completely comfortable...  I'm still experiencing significant spinal pain and I'm still having difficulty putting weight on my right leg without my knee buckling underneath me.  I was more comfortable than I have been lately though so that helped. I set up the new SolarQuest mount in the backyard in the same area where we'll be observing the eclipse next month.  I could have used a small table too but I didn't feel like digging one ou

F or the past few years, I've been going back and forth on whether to purchase a little mount and tripod that can automatically track the sun.  This upcoming solar eclipse nudged me to go ahead and purchase this little piece of gear of convenience.  The solar eclipse happens very quickly so any automated gear will help.  I want to get as many exceptional photos as possible during this very short couple of minutes and this will likely be my last total solar eclipse of my lifetime. This mount with its lightweight tripod is quite small and lightweight which is nice.  Another nice feature is that it is relatively inexpensive for an automatic tracking mount.   This particular mount is made by Skywatcher and is called the SolarQuest.  After leveling this mount, you simply turn it on.  It will automatically connect to satellites to attain the necessary GPS data and then it will slew to the sun automatically and begin tracking the sun.  You can't get easier than that! This nice little

A s usual for this summer, it rained part of the day yesterday and was dark and dreary for much of the afternoon.  For brief periods, however, the sky did clear up nicely.  I was keeping a close eye on the weather and the sky yesterday because I was hoping that the night would be clear so I could get outside to watch and image the Perseid Meteor Shower.   August 11th and 12th were supposed to be the peak of the meteor shower but it rained quite a bit on those days.  We've seen very little night sky this summer and the 11th and 12th were no different.  I got a little lucky last night, however, so I was able to get some shots between fast moving clouds. Once we got dinner out of the way...  we had some delicious pork street tacos which consisted of a liberally seasoned pork loin that was slow-cooked on the grill until it was mouth-wateringly tender and then glazed with a homemade sweet and salty sauce, sauteed onions, and chopped grilled pineapple with a homemade spicy Mexican white

In order to keep my astronomy gear at the highest quality possible, I need all sorts of specialized tools.  The more specialized my gear gets, the more specialized my tools need to be.  That being said, one of the most common tasks an astronomer needs at a high level of proficiency is the task of collimating optics. Lenses comprising a lens group need to be square to each other...  lens groups need to be square to the focuser...  and mirrors, if your telescope has any, need to be perfectly aligned so the light focuses at one sharp point after reflecting off of two mirrors.  The solar spectroheliograph I am building also needs each of its four optical elements to be aligned perfectly with respect to each other.  Astronomy isn't just about looking at the sky.  Your gear needs to be properly maintained otherwise your observing sessions will be less-than-stellar (pun intended).  Of course, I'm also not your typical backyard astronomer who is just looking for some "gee whiz&quo

I did a little bit more research and testing of the custom spectroheliograph I am building yesterday.  This time I actually captured a single frame of data of one spectral line.  Honestly, I can't even remember which line this was...  Hydrogen alpha?  Sodium?  Continuum?  I honestly don't remember and I suppose it does not matter.  I just wanted to make a little more progress in this project. This image is just one still image of a spectral line captured without the use of a telescope of any sort.  I simply had the spectroheliograph pointed out our living room window.  My purpose was simply to see what a captured image would look like.  For collecting data to compile an actual image of the current sun, I would need to be connected to a telescope and then capture video...  from one end of the spectral line scanning toward and beyond the opposite end of the spectral line.  It would be a completely different process. One thing I did noticed in this image is that either my focus w

We are somewhere in the midst of unrelenting solid rainfall and flash flooding.  Fortunately, we are in a relatively safe area (meaning higher ground away from rivers) although I suspect the septic tank will be full of water for a while and the yard will likely be mush for a few days if and when the rain ever stops.  Downtown Waterbury, a small town that was devastated by Tropical Storm Irene and a town that just finished rebuilding its infrastructure due to Irene's wrath and high water within just the past month, is likely going to be flooded as badly as Irene caused or worse.  On the plus side, I can't think of any reason why we would need to go anywhere for the next few days and we probably cannot go anyplace because our roads will likely be under water and perhaps washed out.  Bridges and roads are being washed out across our area. In the meantime, I stayed indoors and worked on more adjustments on the rudimentary spectroheliograph I am building.  I am understanding more an

T he other day, I went out to the shed in the rain to cut out a couple of aperture masks for my small 50mm guide scope.  I want to try to use this guide scope as an imaging scope for imaging the full disk of the sun.  I have previously worked out a potential configuration to do the same using my 72mm ED refractor but I want to compare the two and then continue to use the one that produces the best images.   I need these aperture masks because I need the guide scope's focal ratio to be in the f5 to f6.5 range.  Without these aperture masks, my guide scope is at f3.2 which is too fast for this particular use.  I'm using my Quark Chromosphere solar filter so I need the focal ratio to be between f4 and f8.  I'm thinking that closer to f4 might be better for capturing prominences while closer to f8 will be better for capturing details on the 'surface' of the chromosphere.  This surface isn't really a hard surface though...  it is a surface of plasma gas in the form o

Whenever I'm observing the night sky (as opposed to imaging the night sky), I use a diagonal placed into my focuser.  The diagonal reflects the light that is streaming through the telescope to a 90° angle making it easier to view through the telescope.  Some diagonals are at 45° but those are mostly used for terrestrial observing where the telescope is mostly horizontal or level.  The eyepiece is placed into the diagonal and, due to the diagonal reflecting the light  90°, the top of the eyepiece  is now pointing upward making it easier to look down into the eyepiece.  This is the purpose of the diagonal...  to direct the light to the eyepiece at a position that is easier for viewing. If you had no diagonal to change the direction of the light, you would need to crane your neck to view straight through the telescope.  Sometimes you would even need to be sitting or lying on the ground to view the sky through the telescope if not using a diagonal.  A diagonal makes it easier to view