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    Katoomba, Blue Mountains, Australia

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Benklerk's Achievements

Star Forming

Star Forming (3/19)



  1. Attached is my most recent image using a skywatcher 72ED on a HEQ5 Pro belt mod. Camera is a ZWO ASI 1600mm with filter wheel. This well be my farewell image to the 72ED as its being replaced the new FLT 91. This is probably one of my best images to date. Spent quite a lot of time getting the data and processing it. The Carina Nebula is a large, complex area of bright and dark nebulosity in the constellation Carina, and is located in the Carina–Sagittarius Arm. The nebula lies at an estimated distance between 6,500 and 10,000 light-years from Earth. The nebula is one of the largest diffuse nebulae in our skies. Although it is some four times as large and even brighter than the famous Orion Nebula, the Carina Nebula is much less well known due to its location in the southern sky. Eta Carinae is a highly luminous hypergiant star. Estimates of its mass range from 100 to 150 times the mass of the Sun, and its luminosity is about four million times that of the Sun. I have uploaded LRGB, LRGB HA and OIII, SHO, OHS, OHS and a few starless versions. Image details are attached below Ben
  2. After having a very wet summer I managed to get more data of the Orion Nebula. The Orion nebula is a is a diffuse nebula situated in the Milky Way, in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. It is about 1,344 light-years away, and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. The first image is your LRGB and the 2nd image is IR with G and B filters. ©
  3. It does look good, maybe a bit off, but I remove the baffle tube on mine to align the spider vanes so they are aligned and that the secondary is dead centre. Then a lock in the primary mirror.
  4. I hope you read about the issues with the Ioptron Cem120EC/2 mounts. But as your using wide field refractors you should be ok. But once you get above 12" this is where the issues could start depending on your FOV and arc sec resolution.
  5. Hi @Jaystar The CEM120 encoder versions have a very common issues with SDE. It can cause slight eggy stars on telescope with long focal lengths. Its basically how the encoder sends signals to maintain tracking. There is a whole discussion on it on cloudy nights. But unless you have a 12" telescope or larger. You probable won't see it. Ioptron knows about and has never fixed the problem since the mount was introduced a few yrs ago.
  6. At this stage, I'm looking at getting the GM3000, as I will have room to move if I want to upgrade later on.
  7. Hi I had a CEM120EC that gave me the #$#@. It never performed well on my 14" telescope and I did have a SDE of 0.4 arcsec. I spent 6 months trying to get it to work and now its gone from my life, worst mount I have ever used, and its also my first heavy payload mount. Now I'm looking at new mount, does anyone of any reviews on either the 10micron GM2000 or GM3000 and the mesu 2000? Ben
  8. If you read on the cloudnights forums over in the US the CEM120 is pretty good. But its the encoder versions that is causing quite a lot of issues. I just sent mine back for refund.
  9. Messier 8 (Lagoon Nebula) and Messier 20 (Trifid Nebula) This is a 2 panel mosaic and one of my first attempts at doing one. The Lagoon Nebula is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula. The Lagoon Nebula is currently undergoing a period of active star formation and has already formed a sizable cluster of stars. NGC 6530, the extremely young open cluster formed from the material of M8. The Lagoon Nebula is estimated to be between 4,000-6,000 light-years from the Earth. Like many nebula's, it appears pink in time-exposure color photos but is gray to the eye peering through binoculars or a telescope, human vision having poor color sensitivity at low light levels. The Trifid Nebula is also an H II region located in Sagittarius. The name Trifid refers to its three-lobed appearance. Messier 20 consists of several different objects: an emission nebula, a reflection nebula, a dark nebula and an open star cluster. First image is HOO which is just Hydrogen and Oxygen. OSH Oxygen as red, Sulfur as Green and Hydrogen as Blue SHO Sulfur as Red, Hydrogen as Green and Oxygen as Blue HSO Hydrogen as Red, Sulfur as Green and Oxygen as Blue OHS, Oxygen as red, Hydrogen as Green and Sulfur as Blue Skywatcher ED72 HEQ5 Pro Beltmod ZWO 1600 with Filters HA 28 x 10min OIII 34 x 10min SII 28 x 10min Total 90 x 10min Total time 15hrs
  10. The Prawn Nebula is an emission nebula located in the Sagittarius Arm of the Milky Way. It has an apparent magnitude of 7.31 and is around 6,000 light-years from Earth in the constellation Scorpius, the region is about 250 light-years across, spanning over 3-4 full moons in the sky. The nebula was discovered around 1900 and it is a stellar nursery that contains a large number of very hot, luminous, young stars, formed out of the surrounding gas. I also made other versions by switch the colour around, let me know what you think, I don't see many people doing it. HSO OHS OSH Skywatcher 72ED HEQ5 Pro Belt mod ZWO 1600mm with filter wheel HA 3 hrs OIII 3.8 hrs SII 3 hrs Total Time 9.8 hrs
  11. This is my 2nd all NB image NGC 6188 is an emission nebula located about 4,000 light years away in the constellation Ara. The bright open cluster NGC 6193, visible to the naked eye, is responsible for a region of reflection nebulosity within NGC 6188. NGC 6188 is a star forming nebula, and is sculpted by the massive, young stars that have recently formed there. NGC 6164 also created by one of the region's massive O-type stars. Similar in appearance to many planetary nebulae, NGC 6164's striking, symmetric gaseous shroud and faint halo surround its bright central star near the bottom edge. This view spans about 5 Full moons. Skywatcher 72ED HEQ5 Pro Belt Mod ZWO 1600mm with Filter Wheel HA 4.3hrs OIII 4.5hrs SII 3.3hrs Total Time 12.1hrs
  12. I was looking at getting a mesu 200 shipped to Australia. But with the new elbow pier. Shipping costs would be very high. But i'm following the JTW OGEM mount now.
  13. Thanks for the responses. Spent the last few days going though tons of website. Looks like V groove tracks is the why to go. I can get 75mm, 100mm or 150mm wheel size. How much of a difference would there be in ball bearing wheels compared to plain ones? https://www.richmondau.com/wp-content/uploads/2017/05/Track-Wheels-V-Groove.pdf?fbclid=IwAR2DuIo9luUpH32faTf5W9cDmrhruL2_fQ_3pTYvpWD6Pm7pV1nv6GQcbGI
  14. Hi all I'm in the design stages for my backyard obs. I'm going to go with a timber shed with a colour bond roof. It will be 3m x 3m internally. I have attached a diagram which is almost finished of my shed and the diagram of my mount. The idea is to have the pier 700mm high off the floor and with a wall height at 1.6m and peak inside roof height at either 2m or 2.2m. At this stage I'm still deciding on going with a automated roof or push the roof, it has to move a 3mx3m timber roof. For the wheels would ball bearings be better and what sizes should I be looking at? Does anyone of any ideas what to go with? I would like to keep the motor inside if possible. The motor doesn't need computer control, I'm happy to push a button to open the roof. Ben
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