M13 - Globular Cluster in Hercules. I did not use a telescope for this shot. I just used a Canon 60Da with a 135mm lens. This is a single three-minute exposure. #astrophotography #astronomy #messier #canon #space #science #stars #oriontelescopes
Andromeda Galaxy Clearing the Trees. Another shot with the Canon 60Da and 135mm lens on an Orion Sirius mount. This is a single three-minute exposure. The trees are blurry because the mount was tracking the stars and not the ground. #astronomy #astrophotography #andromeda #galaxy #m31 #space #stars #cosmos #universe #canon #oriontelescopes #60da
This is M8 - The Lagoon Nebula. It was much cloudier and windier than I hoped on Saturday night. I only got a few “keeper” shots and here is one. #astronomy #astrophotography #oriontelescopes #canon #williamsoptics #space #stars #cosmos
Late night astrophotography in Los Angeles. What a great evening of exploration and adventure. Ventura, CA.
Hi Emma, What equipment do you use for observing?
Hi! My telescope is a Celestron Astromaster 130 EQ (so a 5.1” Newtonian). I have a range of Meade eyepieces that go from 6.4mm to 40mm, a couple of colour filters, a Moon filter, and a 2x Barlow lens. Currently have a Telrad on my ‘scope and a Baader solar filter I can put on the front. Depends on what I’m observing, but everything I’ve mentioned has come in handy at some point!
Most of my photos that I post were taken with my phone through the ‘scope (easier to get in focus than a camera). Having said that, my family has a camera with a pretty good zoom, so sometimes I use that on its own for lunar photos.
Summer Solstice 2014
Throwback Sunday to when I took this picture of the night sky above the Polebridge Mercantile Summer Solstice Party in Polebridge, Glacier National Park. Luck was on my side when I took the second picture, during the time that the shutter was open the International Space Station’s solar panels hit just the right angle reflecting the sun directly onto my camera’s sensor. That day was a good day indeed.
45 years ago today, Apollo 11 landed on the first humans on the moon. Neil Armstrong and Buzz Aldrin spent 21.5 hours on the lunar surface.
The line above is the spectrum of a star Beta Ursae Minoris “recorded” in 1976. As I mentioned in a recent post, I was working on astronomical photographic plates. There are about 2000 of such plates in the archives of Tartu Observatory’s astrophysics department and they all hold important and unique observing data of various stars. I digitalized a part of the collection and data which also had to be adjusted and organized.
The spectrums recorded from the stars’ light show the chemical composition of them. It was discovered in 19th century and it lead to the birth of astrophysics. (You can read all about its history here.) The technique involved a telescope which collected the light from the object of interest (it didn’t have to be a star), spectrograph which broke the light into a spectrum, and a glass plate with specific emulsion.
Observatories around the world have similar archives as the spectroscopy with astronomical photoplates was the best way to research stars at that time. Now most of them are being digitalized to make an available database which could be very useful for historical research.
This is what the spectrum plates of our observatory look like: