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About Benklerk

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    Katoomba, Blue Mountains, Australia
  1. Benklerk

    NGC 253 GSO RC 6

    Fixed up the red gradient issue.
  2. Benklerk

    NGC 253 GSO RC 6

    @Xiga My HA stack
  3. Benklerk

    NGC 253 GSO RC 6

    NGC 253 also known as Sculptor Galaxy, is an intermediate spiral galaxy in the constellation Sculptor. As one of the brightest galaxies in the sky, the Sculptor Galaxy can be seen through binoculars and is near the star Beta Ceti. It is considered one of the most easily viewed galaxies in the sky after the Andromeda Galaxy. Its distance is about 11.4 Million light years GSO RC 6 HEQ5 Pro belt mod ZWO ASI 1600mm with Filter wheel LUM 71 x 2min = 142min RED 28 x 4min = 112min GREEN 33 x 4min = 132min BLUE 27 x 4min = 108min HA 57 x 10min = 570min Total time = 17.7 hrs
  4. Benklerk

    NGC 6729 GSO 6 RC

    Hi Xiga I use both a Howie Laser and a takahashi collimating scope, the reason its so hard is because you have to be spot on with your mirror alignment. If your off your images will not look sharp. You need to adjust both the Secondary and Primary mirrors to get it aligned. The reason you need a tilt ring is because the baffle tube isn't square on with the focuser so you need to manually adjust the tilt ring so it is square with the secondary mirror,. To align a RC this is what I do. 1) Put in the laser and use the tilt ring so the laser falls onto the center dot of the secondary. 2) Keep the laser in and move the secondary mirror so the laser beam falls back ontop of its self. 3) Put in the tak scope and make sure all the circles in the tak scope are concentric and move the primary mirror of need be. 4) repeat until your happy with the outcome. 5) Do a out of focus star test. Once you lock in your primary mirror it should hold for a while, but the secondary may need to be attended if you move the scope a lot. I use a guide scope, I can't use a OAG because in the RC 6 the field is not flat as it says. You will need a field flattner and trust me it helps but makes the OAG not usable. I use a automatic focuser but had to replace the stock focuser as its crap. So you need to get a better crayford focuser. A use a senso sesto as my auto focuser and I replaced the stock focuser with this TS-Optics 2" UNC V-Power Crayford Focuser. If you post your question in the discussions scope group, im sure many people can help you also. Im no expert in RC telescopes, I only had one for about 2yrs and had to read a lot of information.
  5. Benklerk

    NGC 6729 GSO 6 RC

    Hi Xiga I have a limit of 10min with all the weight I have. I'm right on the weight limit on my Heq5 Pro for imaging. If you do get a RC, be warned. You need a lot of extras to collimate it, and they are not easy to do. You also need a tilt ring. So I cheap 6" RC turns into a few hounded dollars in extras to make it perfect.
  6. Benklerk

    NGC 6729 GSO 6 RC

    I wish I had more data to add to this object, but having over a month of bad weather made it to low in the sky after dark. NGC 6729 is a reflection/emission nebula in the constellation Corona Australis. GSO RC 6 HEQ5 Pro belt mod ZWO ASI 1600mm with filter wheel LUM 27 x 2min = 54min RED 40 x 4min = 160min GREEN 14 x 4min = 56min BLUE 13 x 4min = 52min Total 5.4 hrs
  7. Benklerk

    Helix Nebula GSO 6 RC

    The Helix Neb The Helix nebula (NGC 7293), is a large planetary nebula located in the constellation Aquarius. The estimated distance is about 700 light-years. GSO RC 6 HEQ5 PRO belt mod ZWO ASI 1600mm with Filter wheel RED 55 x 4min = 220min GREEN 49 x 4min = 196min BLUE 46 x 4min = 184min HA 84 x 10min = 840min OIII 21 x 10min = 210min Total Time = 27.5hrs
  8. Benklerk

    NGC 7049

    HI Beka I used pixinsight to make the annotated image
  9. Benklerk

    NGC 7049

    NGC 7049 is a lenticular galaxy and spans about 150 000 light-years across and lies about 100 million light-years away from Earth in the constellation of Indus. NGC 7049's unusual appearance is largely due to a prominent rope-like dust ring which stands out against the starlight behind it. These dust lanes are usually seen in young galaxies with active star-forming regions. NGC 7041 is a lenticular galaxy located about 80 million light-years away. This is my first Deep field galaxy image, the light power of the 6" is limiting. GSO RC 6" HEQ5 Pro Belt Mod ZWO 1600mm LRGB LUM 84 x 2min = 168min RED 53 x 5min = 265min GREEN 44 x 5min = 220min BLUE 42 x 5min = 210min Total time = 14.4hrs
  10. Benklerk

    Messier 8

    The Lagoon Nebula is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and a H II region. The Nebula is estimated to be between 4,000-6,000 light-years from the Earth, the age is about 2 million years old and its size is around 110 by 50 light years. The nebula contains a number of Bok globules (dark, collapsing clouds of protostellar material), also the 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, has a visual magnitude of 4.6 and covers an area of 14 arc minutes in the sky. I have uploaded 2 versions. One shows more contrast while the other shows more of a natural colour. GSO RC 6 ZWO ASI 1600mm with filters HEQ5 Pro Belt Mod LUM 49 x 2m = 98min RED 50 x 3m = 150min GREEN 43 x 3m = 129min BLUE 52 x 3m = 156min HA 44 x 10m = 440min OIII 21 x 10m = 210min Total time = 19.7 hrs
  11. Benklerk

    NGC 6164/5

    Thanks for the responses guys. Yeah this object is a southern Hemisphere object. Trying to get the outer shell was the most difficult to get. As I'm limited to around 10min on my mount that is the best I can do until I can upgrade.
  12. Benklerk

    NGC 6164/5

    NGC 6164 NGC 6164 was created by a rare, hot, luminous O-type star, some 40 times as massive as the Sun, the cenetal star is about 3 to 4 million years old. In another three to four million years the massive star will end its life in a supernova explosion. Spanning around 4 light-years, the nebula itself has a bipolar symmetry. NGC 6164 has been found to have an extensive, faint halo, expanding into the surrounding interstellar medium, the material in the halo is likely from an earlier active phase of the O star. GSO RC 6 ZWO ASI 1600mm with filters HEQ5 Pro belt mod Red 50 x 3min = 150min Green 42 x 3min = 126min Blue 48 x 3min = 144min HA 57 x 10min = 570min OIII 21 x 10min = 210min Total time 20hrs
  13. Benklerk

    M 20 GSO RC 6

    Messier 20 The Trifid Nebula (M 20), is an Ha region located in Sagittarius. The name means divided into three lobes, the object is an unusual combination of an open cluster of stars; an emission nebula (the red portion), a reflection nebula (Blue portion and a dark nebula. GSO RC 6 HEQ5 Pro Belt Mod ZWO 1600mm with Filters Lum 23 x 2min = 46min Red 24 x 4min = 96min Green 25 x 4min = 100min Blue 27 x 4min = 108min HA 24 x 10min = 240min OIII 16 x 10 = 160min Total time = 12.5 hrs
  14. Benklerk

    Shapley 1 ZWO ASI 1600mm

    Shapley 1 is an annular planetary nebula in the constellation of Norma with a magnitude of +12.6. As viewed from Earth it is a torus shaped planetary nebula. It is approximately 4900 light years from Earth, and is around 8700 years old. At the center of the nebula is a magnitude 14 white dwarf star. Its about .32 light yrs across. GSO RC 6 HEQ5 Belt mod ZWO ASI 1600mm with filters Lum 21 x 2min = 42min Red 15 x 4min = 60min Green 13 x 4min = 52min Blue 13 x 4min = 52min HA 17 x 10min = 170min OIII 17 x 10min = 170min Total time = 9.1 hrs
  15. Benklerk

    NGC 4945 ZWO ASI 071 Pro

    I live in dark area so I can get maximum dynamic range but the trade off is higher read noise. But as for a starting point. Unity gain is fine, but it comes down to how close you live to a city or town. If you live to close your images will be washed out at 5min lights. Have a look at this. https://www.cloudynights.com/topic/590093-suggested-sub-exposure-tables-for-asi071mc-c-and-qhy168c/

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