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Showing posts from January, 2015

Argo Navis firmware update v3.0.1 on Linux

Since the end of last year, there is a new firmware for the Argo Navis Digital Telescope Computer available. I'm using an old laptop running on Linux with a serial port to connect the Argo Navis. As I couldn't find a lot of information on how to do the upgrade using Linux on the Internet, I wrote down the procedure I followed to do the upgrade. The upgrade to version 3.0.1 offers a lot of interesting new features: Support for multiple telescope setups. The moon is added to the list of objects, including lunar phase and time of phases. Horizon filter added. Updated object catalogs. Updated ServoCAT protocol. I don't own a ServoCAT, so for me, this is not really useful. ... Steps to upgrade the Argo Navis firmware to version 3.0.1. Download the new firmware from http://www.wilcard-innovations.com.au/firmware.html Note down the settings of your Argo Navis in the SETUP tab. Put the serial cable in the 'Serial 1' port. Start up your Argo Navis while pr

Drawing of the Eskimo Nebula

Image
During the observing weekend in Grandpré last year in November, I took the time to make a sketch of NGC 2392, the Eskimo Nebula. It took a lot longer than expected, but today I can finally present the finished drawing. It was a very humid night. The paper I was drawing on became very wet already after a few minutes. Because of the weather circumstances, higher magnifications were not possible. The Eskimo Nebula is clearly blue and has a bright central star. Around the central star, the nebula is darker. Further away, there is a bright ring. The outer parts of the nebula disappear in the background. I made the drawing in Krita , a free digital painting and illustration application. Because I am not used to drawing, it took a while before I could finish a drawing I'm happy with. Things to keep in mind: It was not possible to use higher magnifications this night, but planetary nebulae really need more magnification. I am happy with the stars I have drawn. They are more or le

Comet Lovejoy, a naked eye object!

After the observation of comet Lovejoy (C/2014 Q2) last week, the weather stayed very bad and cloudy. Today, it rained the largest part of the day, but in the evening it suddenly became very clear. So, we went outside to observe the comet. Using the Vixen 20x80 binoculars, it took a short time to find the comet. Lovejoy was visible as a really nice comet in the binoculars: bright, large, with the tail weakly visible in the direction of Taurus. After the observation with the binoculars, we tried to see the comet with the naked eye. And indeed, Lovejoy was weak, but unmistakably visible with the naked eye. If you haven't seen comet Lovejoy yet, you should really try to spot this nice comet as you can not see a naked-eye comet every year! Check my observations of comet Lovejoy in DeepskyLog . More news on the comet and some finder charts can be found on the website of Sky & Telescope .

Comet Lovejoy: We saw it!

Yesterday was a cold but clear day. So before going to bed, we tried to spot comet Lovejoy (C/2014 Q2). The sky conditions were not good at all: the moon was full and we had to stand on the street to see Lovejoy. This means that a lot of straylight made seeing the comet even more difficult. At a magnitude of 4 to 5, the comet should be easy to find using small binoculars at the moment. First, I tried to find the comet with 10x50 binoculars. Without a real star chart, I could already spot Lovejoy very soon. I was amazed by the brightness of the comet. Lovejoy looked like a bright deep-sky object, even under these terrible sky conditions. I went back inside to get my 20x80 binoculars and mount. It was a bit more difficult to find the comet because of the smaller field of view. The comet was quite large and brighter than expected. Lovejoy appeared round, with a brighter center, a bit like a bright unresolved globular cluster. A tail could not be seen. More news on the comet