This was taken on 14th November 2013. I took it using my Altair Astro triplet 80mm refractor with an Atik 314L+ camera through an Astronomik OIII filter.
I took 20 frames of 1/1000th of a second (the lowest exposure the Atik 314L+ will do). I then stacked it in Maxim DL. I did not remove any darks or take any flats. I then took it into Photoshop and sharpened it and then used a high pass filter on it to sharpen it a bit more.
Not my best lunar image, you can tell the difference between doing this image on a 80mm refractor compared to an image I took using a 120mm refractor. The 120mm just gives you more contrast, light and generally a better image. You can see the 120mm moon image here: http://www.astronomylog.co.uk/2011/09/15/harvest-full-moon/
But if you want really sharp lunar images then a webcam type camera is a better idea, where you can take up to hundreds of frames a second and just take the best frames and stack those all automatically in programs like Registax. Here is an image where I did just that and created a mosaic: http://www.astronomylog.co.uk/2013/03/20/moon-mosaic-with-altair-astro-8-gso-rc/
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Since I wrote the post on controlling your observatory PC remotely (and I had the letter about this published in Astronomy Now).
I have now discovered that you can now control your Windows based observatory PC from your iPhone, iPad or Android device – whether it’s a phone or a tablet device.
Why and How can I do it? Well you can do it as Microsoft have released a Remote Desktop app.
Just make sure your observatory PC is running a Pro, Business or Ultimate version of Windows XP, Vista, 7 or 8.
I have tried the app out on my Nexus 7″ Android tablet, and it works really well, even though the PC desktop does look quite small on a 7″ tablet. I think controlling your PC via a smartphone sized screen would be a bit too small.
You can download the apps on Google Play and from Apple AppStore. Search for ‘Windows Remote Desktop App’
Have a play and see what you think. Tell us how you get on.
At last my guiding seems to be working, after using a finder guider for a couple of years with mixed results, I think I have it cracked.
I originally used to expose my QHY5 camera on my Skywatcher finderscope every 2 seconds for guiding, and have aggressiveness setting of 4-5. I also used to use my finderguider un-binned with a calibration time of 25 seconds.
This is now my Maxim DL autoguiding set-up:
2x Binned QHY5 camera
5 second exposures
Aggressiveness of 6 and 6.5
Calibration Time: 40 seconds
Waiting time between frames: 65 seconds
These are the settings when imaging through my Altair Astro 80mm Triplet at f4.8 at 3.46 arc seconds per pixel. These settings may change when I image with my 8″ RC scope.
Maplin our favourite high street gadget and electronics retailer have just started to sell telescopes.
Maplin currently have a range of Danubia and Celestron reflector and refracting telescopes. The new range starts from £49 up to over £500 for the Danubia 200mm on an EQ5 mount.
They even have a nice looking brass pocket telescope as well for just over £50.
All the Maplin telescopes are available from Maplin and there is free delivery on all of them.
For more information visit the telescope page at Maplin: www.maplin.co.uk/buy-leisure/binoculars-telescopes-and-night-vision/telescopes?C=19788
Fancy getting your face in space on the Big Space Balloon? If so, visit http://www.bigspaceballoon.co.uk/
Don’t forget to book your tickets for the Sir Patrick Moore lecture at the Free SPA Convention at the Cambridge Astronomy Association on 12th October 2013. Visit the SPA website for more details.
This image of the Solar disc was taken on Saturday 6th July 2013. It was taken using a standard Coronado PST and an Imaging Source DMK21 AU618 Mono camera. I did use a Short ‘C’ mount adaptor in order to allow the PST to gain focus, without having to use a Barlow lens.
As the DMK21 is only 640×480 I have to take 4 videos and then process each one in turn using Registax 6. I then imported them into Photoshop and used the Photomerge software to align them all up into one image. I then gave the mono image some false colour.
Here is a copy of the presentation I did at the Cambridge Astronomy Association on the 26th June 2013 in PDF format.
– Deep Sky Imaging with a DSLR for Free Talk (1.5mb)
Below is the PDF version of the solar imaging with webcams talk I did at the Cambridge Astronomy Association on 19th June 2013.
– Solar Imaging Talk (1.3mb)
Below is the PDF version of the lunar imaging with webcams talk I did at the Cambridge Astronomy Association on 19th June 2013.
– Lunar Imaging Talk (850k)
M63 – Sunflower galaxy
M51 – Whirlpool Galaxy
M3 – Globular cluster