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Strange observations

Hi,

I have been observing since the late 1980s and have seen some odd things in the sky over the years. Usually they are explainable (flightradar24 has proved handy for this in recent years) but I'm stumped with this one:

Around a year ago I was out with the telescope and at one point as I was standing beside the scope looking up I saw what I thought was a very brief shooting star, literally ...
Read more : Strange observations | Views : 177 | Replies : 2


Astronomy

Months ago I purchased a diagonal for my Celestron CPC 1100 that would correct the image through the eyepiece. I purchased one in Amazon months ago. Finally after a number of months, I was able to get my telescope out this past weekend. Unfortunately, I discovered that this new diagonal doesn't connect to my CPC 1100. What adaptor would I need to get in order to enable this diagonal to be installed on my telescope? ...
Read more : Astronomy | Views : 151 | Replies : 0


Astronomy

Months ago I purchased a diagonal for my Celestron CPC 1100 that would correct the image through the eyepiece. I purchased one in Amazon months ago. Finally after a number of months, I was able to get my telescope out this past weekend. Unfortunately, I discovered that this new diagonal doesn't connect to my CPC 1100. What adaptor would I need to get in order to enable this diagonal to be installed on my telescope? ...
Read more : Astronomy | Views : 139 | Replies : 1


Book Announcement

I have completed the first draft of "Being an Astronomer" 2nd edition. This will contain detailed descriptions of some of the constellations, some data about solar system positions and some new photographs. This gives more help to readers who have no or limited access to the internet.

In the meantime, starting tomorrow, there is a 5 day free promotion for the first edition:

https://www.amazon.com/Being-Astronomer ... ay&sr=8-12
Read more : Book Announcement | Views : 206 | Replies : 0


Astrologically Challenged

March 23rd
I finished the first draft of my Constellations chapter and started on solar system data. Best of all, I showed that the Sun is in a totally different place from the "signs of the zodiac" as shown in newspapers!

Constellation
Dates (approx.)
Sagittarius
December 15th to January 21st
Capricornus
January 22nd to February 15th
Aquarius
February 15th to March 12th
Pisces
March 12th to April 20th
Aries
April 20th to May 13th
Taurus ...
Read more : Astrologically Challenged | Views : 186 | Replies : 0


Happy Birthday Phil!

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Hope you have a great day.

Regards

Graeme
Read more : Happy Birthday Phil! | Views : 252 | Replies : 1


Space Shuttle & ISS in night sky

I remember seeing a shuttle and the ISS as 2 stars very low in the southern sky (from Sheffield) in around 2010ish. The shuttle wasn’t docked to the ISS and you could see them separate points of light. I cannot remember which shuttle it was and I’d like to know. Does anyone remember the event- it got a lot of attention on Facebook as I remember. Thanks!
Read more : Space Shuttle & ISS in night sky | Views : 263 | Replies : 2


File Types

What's best?

AVIs or SERs for video files?

FITs, TIFs or PNGs for single images?

I had not heard of SERs or FITs before I bought my Altair GPCAM290. My understanding is that with short exposures, videos are better and with long exposures single images are better. And then the file choice is down to whatever software is being used. DSS will stack TIFs and FITs but Registax will only stack FITs.

What else should ...
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DSS Only One Frame

We've had some good clear skies over the last couple of nights in Kent. (I saw Mercury setting tonight (always a bit of a treat! (It will be at it's greatest eastern elongation in a few days.))) The new heated dew shield is working nicely. Visually the CGX is performing well now I can do a half decent polar alignment. I got some (poor!) images of M42 Thursday night after finally working out how to ...
Read more : DSS Only One Frame | Views : 368 | Replies : 3


Expansion or Acceleration

From the last Sky at Night programme....

I am not a scientist but thought this should be considered - this is not a debate for me, just some ideas ' out of the box'.

1. Should we be treating the Hubble constant as a constant at all? By assuming the universe were to be accelerating in its rate of expansion would explain potentially the difference in the measured results using the different methods. In other ...
Read more : Expansion or Acceleration | Views : 410 | Replies : 2


 

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