Comet C/2020 F3 NEOWISE
C/2020 F3 NEOWISE in the city lights This comet is somehow unexpected guest. It was discovered by a team using the NEOWISE space telescope…
Messier 63 Sunflower galaxy
Messier 63 Sunflower galaxy is somehow an iconic object. Once you saw it, you probably will not forget it. It is a spiral galaxy with no central bar…
Pleiades spectra
During last observing session I pointed telescope with attached spectroscope to well known Pleiades open cluster. It is also called "Seven Sisters"…
Amateur measurements of radial velocity
Since you are here you probably are interested somehow in astronomy. And you probably already are aware of terms like Doppler effect or radial…
LowSpec amateur spectroscope
Check spectra obtained with LowSpec here Check other entries related to spectroscopy here I have been looking for different aspects of astronomy…
Messier 1 Crab nebula expansion
Messier 1 nebula, also known as Crab, is a supernova remnant in the constellation of Taurus. It corresponds to a bright supernova recorded by…
What telescope to buy? Part I - visual observations
End of the year is coming, nights getting longer at the northern hemisphere, many people start to think about gifts and presents. Winter night…
Astronomy amateurs myths - part I
There are quite a few statements that are present among astronomy amateurs, and are not necessarily always true. Let's check if you are aware of…
Double stars observations
I already made a two entries about observing and measuring double stars (here and here). Over last one year and half I had a few sessions with this…
Thirty months with Samyang 135 f/2
It's been well over two years since I got into my hands Samyang 135 f/2 glass and use it as my primary astrophotography lens. Since that time I…
Distant clusters around M82
M82 Cigar Galaxy is well object known to astronomy amateurs. If you are visual observer, then you most probably have already seen it. If you are…
Processing color Moon images
The Moon is very tempting and graceful imaging target. It is enough to have some longer focal length instrument without any tracking abilities to…