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Explorer 190 MN

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About Explorer 190 MN

  • Rank
    Star Forming

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  • Location
    Inverness, Scotland
  1. NGC 3718 the large galaxy in the center of the picture. NGC 3718 is 52 Million light years away. The Hickson Group 56 at the bottom it is a whooping 400 million light years away which is just increadible. Eoo much LP around here ! Total exposure time 10h 45 mins 9 x 1200 sec Lum bin 1x1 32 x 600 sec Lum bin 1x1 11 x 300 sec Lum bin 1x1 15 x 120 sec R bin 2x2 15 x 120 sec G bin 2x2 15 x 120 sec B bin 2x2 RC 250 TT CGE Pro corrected with a TDM Feather Touch focuser with Feather touch Micro focus motor SX LF AO SX Slim OAG SX Lodestar Atik 460ex Mono Atik FW2 9 filters 1,25" Baadar 1,25" LRGB filter of
  2. Explorer 190 MN

    Do you ever feel like you've wasted your money?

    I live in the North East of Scotland and sometimes I do get that feeling but when I get those few and far between magic nights all thoughts of selling get clouded out. I almost almost put mine up for sale. After a good run of pictures I am now looking into a APS H size CCD. I dont think I could part with my Observatory its just too good to sell and the amount of money and gear I have gone through to get to the point I am at now.
  3. Explorer 190 MN

    Sunflower Galaxy

    Thank you I had unusually good seeing
  4. M63 Galaxy also known as the sunflower galaxy. It is a relatively bright Galaxy at Mag 9.3 It is roughly 37 million light years form earth and is a part of the M51 galaxy Group. I can only imagine the excitement of Charles Messier when he first saw this galaxy in the Mid 19th century during his search for comets. The seeing was rather good on the night which makes a change as we almost always have the jet stream above my observing places which causes all sorts of distortion in the atmosphere. My observing place is only 14 m above sea level there is also a fair bit of light pollution since the new housing development was built last year. I can no longer see the Milky way sadly its time to move! I hope you enjoy the picture! RC 250 TT CGE Pro corrected with a TDM Feather Touch focuser with Feather touch Micro focus motor SX LF AO SX Slim OAG SX Lodestar Atik 460ex Mono Atik FW2 9 filters 1,25" Baadar 1,25" LRGB filter The image consists of 37 x Lum bin 1x1 15 x 60 sec R bin 2x2 15 x 60 sec G bin 2x2 15 x 60 sec B bin 2x2 Total 3.8 hours taken over three nights
  5. What later became known as the Whirlpool Galaxy was discovered on October 13, 1773 by Charles Messier it estimated to be 35 million light years away.. There are two Galaxys here and it is thought that the smaller one is being devoured by the larger Galaxy. Not sure this is the final version or not. Total of 2.8 hours exposure 25 x 300 sec Lum 15 x 60 sec R Bin 2x2 15 x 60 sec G Bin 2x2 15 x 60 sec B Bin 2x2 RC 250 TT CGE Pro corrected with a TDM Feather Touch focuser with Feather touch Micro focus motor SX LF AO SX Slim OAG SX Lodestar Atik 460ex Mono Atik FW2 9 filters 1,25" Baadar 1,25" LRGB filters CGE Pro PE corrected to +/- 0,5 arc sec at 5 Hz correction speed which is five corrections per second Guiding to 0,1 to 0,0 in both X and Y pixel corrected at 8 Hz Pixel resolution is 3,32 arc sec Multiply the pixel size of your camera in microns by the focal length of your camera in millimeters. Divide this number by 206.265 to calculate the arc seconds per pixel resolution of your camera So the lodestar at 2000mm fl is 0.83 arc sec pixel resolution Then 4x4 to get 3,32 arc sec pixel resolution Divided 3,32 by 0.1 pixel wander to get a star wander error of 33,2 arc sec pixel. My main imaging train resolution is 0.47 arc sec Guiding at 8 Hz update speed I could go all the way to 25Hz but then I would be chasing seeing. So the reason to bin 4x4 is for download speed, sensitivity and there is no point in high resolution guiding because of local seeing limitations. I am sure the local seeing limitation at 14 m above sea level is far more than 3.32 arc sec pixel and then we factor in scope diameter which is beyond me to give a figure sorry!!!
  6. What later became known as the Whirlpool Galaxy was discovered on October 13, 1773 by Charles Messier it estimated to be 35 million light years away.. There are two Galaxys here and it is thought that the smaller one is being devoured by the larger Galaxy. Not sure this is the final version or not. Total of 2.8 hours exposure 25 x 300 sec Lum 15 x 60 sec R Bin 2x2 15 x 60 sec G Bin 2x2 15 x 60 sec B Bin 2x2 RC 250 TT CGE Pro corrected with a TDM Feather Touch focuser with Feather touch Micro focus motor SX LF AO SX Slim OAG SX Lodestar Atik 460ex Mono Atik FW2 9 filters 1,25" Baadar 1,25" LRGB filters CGE Pro PE corrected to +/- 0,5 arc sec at 5 Hz correction speed which is five corrections per second Guiding to 0,1 to 0,0 in both X and Y pixel corrected at 8 Hz Pixel resolution is 3,32 arc sec Multiply the pixel size of your camera in microns by the focal length of your camera in millimeters. Divide this number by 206.265 to calculate the arc seconds per pixel resolution of your camera So the lodestar at 2000mm fl is 0.83 arc sec pixel resolution Then 4x4 to get 3,32 arc sec pixel resolution Divided 3,32 by 0.1 pixel wander to get a star wander error of 33,2 arc sec pixel. My main imaging train resolution is 0.47 arc sec Guiding at 8 Hz update speed I could go all the way to 25Hz but then I would be chasing seeing. So the reason to bin 4x4 is for download speed, sensitivity and there is no point in high resolution guiding because of local seeing limitations. I am sure the local seeing limitation at 14 m above sea level is far more than 3.32 arc sec pixel and then we factor in scope diameter which is beyond me to give a figure sorry!!!
  7. Hello all it has been years since I posted here and two years since I had my telescope fired up due to tramatic life events, bad weather and trying to get a system that really works almost there... So this is my first astro image in two years I almost forgot how to use the imaging setup and really forgot lots of processing tricks. This image has had some very basic processing done to it. The Moon was almost full so I had to pick the galaxy out of the moonlight filled subs. I kept the subs short so as not to fill the CCD chip with moonlight and to not over saturate the stars so as to keep their colour. I hope this came out Ok as I am using TV screen for processing and I am not sure of the calibration. I did try online calibration sites so fingers crossed!! If it looks freakish in anyway please let me know so I can adjust the screen properly. So this is as far far away as the moon would permit an incredible 25 million light years away !! So if a light year is about 5879000000000000 miles away then 25 million light years would be ...... hmmmm smoke came out of the calculator when I tried to calculate it... Ill just pop out and get a abacus brb! I took the subs over 2 nights February 25 2018 and Febuary 26 2018 48 x 300 sec Lum Binned 1x1 15 x 60 sec Red Binned 2x2 15 x 60 sec Green Binned 2x2 15 x 60 sec Blue Binned 2x2 Total exposure 4.75 hours Calibration 429 Bias 1x1 93 Bais 2x2 93 Dark frames 300 sec binned 1x1 81 Dark frames 60sec binned 2x2 18 Flat frames for each LRGB To create this image I use Maxim DL for camera controll, SX AO controll, filterwheel ect. I then used Pixinsight to process the image. Very basic because I have forgotten loads, basically Calibrated , Registered, Subs interagerad LRGB, Colour calibrated using Pixinsight Photometric Colour Calibration, Background Normalisation, Deconvolution, Histogram Stretches, LRGB combination, More histogram stretches, Curves like a gazillion iterations to snap the galaxy out of the moonlight, Saturation adjustment, Histogram RC 250 TT CGE Pro corrected with a TDM Feather Touch focuser with Feather touch Micro focus motor SX LF AO SX Slim OAG SX Lodestar Atik 460ex Mono Atik FW2 9 filters 1,25" Baadar 1,25" LRGB filters
  8. Explorer 190 MN

    Atik 460 EX, Filter Wheel. 9 Filters £1900

    whoops
  9. Atik 460EX CCD camera Excellent QE Low noise characteristics 12.49mm Horizontal x 9.99mm Vertical Cooler, ΔT= -25oC max Backfocus 13mm £1350 Atik EFW2 Filter wheel, stable filter wheel milled out of a solid block of aluminium. Has never missed a beat works perfect. 9 filters included Baadar LRGB Ha OIII SII Hb 1,25" 5x2” filter holder (included) 9x1.25” filter holder (included) USB Cable (included) 12v Car Adaptor (included) 2" Adaptor (included) £550
  10. Atik EFW2 Filter wheel, stable filter wheel milled out of a solid block of aluminium. Has never missed a beat works perfect. £500 This is a package deal only Everything is in top condition Price new would be £797 so £500 is almost 40% of cost price!!! 9 filters included Baadar LRGB Ha OIII SII Hb 1,25" 5x2” filter holder (included) 9x1.25” filter holder (included) USB Cable (included) 12v Car Adaptor (included) 2" Adaptor (included)
  11. Explorer 190 MN

    6 years in the game need help!

    My signature is wrong dont know how to change it I have taken the AO off
  12. I am lost this time. I have elongated stars in RA.. the witch hunt begins... Guide stas with OAG are also elongated but the Howie Glatter laser tells me everything is fine, The telescope drive master encoder tells me RA PE is within 1 arc second peak to peak. The guide graph (Maxim) tells me sub arc second guide error with 5 second intergration times but elongated stars. Pempro tells me over a 20 min period the average RA drift is 0.2 arc seconds out to the east. Balance weight accordingly. Cable trail is minimal tuned using the read out from the telescope drive master. It has a resolution of a 1/8 of a arcsecond at 5 Hz all mounted in a Obs no wind.
  13. Explorer 190 MN

    Maxpoint question.

    Did you ever get an answer?
  14. Explorer 190 MN

    Shelyak shutter control pulling my hair out!

    No idea of what happened there...
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