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My Telescopes

My Main Telescope - C14 and Paramount ME

My new Paramount MyT and 8-inch Ritchey-Chretien Telescope

MyT Hand Controller

My Meade 12 inch SCT on a CGEM (Classic) Mount

My 4 inch Meade Refractor with Sky Watcher Guidescope and ZWO camera on a CGEM (Classic) Mount

Skywatcher Star Adventurer Mount with Canon 40D

 

My Solar setup using a DSLR and Mylar Filter on my ETX90

DSLR attached to ETX90. LiveView image of 2015 partial eclipse on Canon 40D

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 I try to log my observing and related activities in a regular blog - sometimes there will be a delay but I usually catch up. An index of all my blogs is on the main menu at the top of the page with daily, weekly or monthly views. My Twitter feed is below. I am also interested in photograping wildlife when I can and there is a menu option above to look at some of my images. I try to keep the news feeds from relevant astronomical sources up to date and you will need to scroll down to find these.

The Celestron 14 is mounted on a Paramount ME that I have been using for about 10 years now - you can see that it is mounted on a tripod so is a portable set up. I still manage to transport it on my own and set it all up even though I have just turned 70! It will run for hours centering galaxies in the 12 minute field even when tripod mounted.

 

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Monday
Mar102014

Day 27 Astrophotography Tool, The Moon with the Canon 40D and Step by Step Instructions for All Star Polar Alignment

 

I used the new setup today. I looked at the Moon first of all at 1816 UT. This is via the Canon 40D on the ETX90 viewed in APT.

and again at 1819 UT - showing how I have selected the Moon on the NexRemote virtual handset

 

and again at 1915 UT. The log shows the exposures I have taken at 1/100th of a second ISO 200 at around 20 degrees C.

 

I am finding it difficult to align the ETX and the 4" refractor as I only have a camera mount for the ETX which I need to "shim" to get approximate alignment.

I went through the process of 2 star alignment on the CGEM with 4 additional calibration stars and then went through the process of polar alignment using the all star alignment method.

ALL STAR ALIGMENT PROCESS

1. I pressed the UNDO button on the handset (the actual handset not the NexRemote virtual handset - you need to be at the telescope for all of this!) I was then back at the "CGEM READY" display.

2. I then pressed the LIST button and used the down button to get to the NAMED STARS option. You must choose a star that is high in the South near the meridian so I chose PROCYON and pressed ENTER.

3. The CGEM slewed to Procyon.

4. I then pressed the ALIGN button on the handset and then the down button to get to POLAR ALIGN. I then pressed the down button to get to ALIGN MOUNT and pressed ENTER.

5. I centred Procyon in the finder and eyepiece as advised by the handset using the buttons on the handset pressing ENTER and ALIGN as usual.

6. I then pressed ENTER again to start the actual alignment. The telescope slewed again - this time pointing to where it thought Procyon should be if the telescope was properly aligned. Of course Procyon was no longer in the eyepiece.

7. I then adjusted the ALTITUDE and AZIMUTH knobs on the mount until I once more had Procyon in the eyepiece.

8. I then pressed ENTER and the handset responded with ALIGNMENT COMPLETE.

 

At that point the polar axis should be pointing at the North Celestial Pole.