Gear
20240223-RC-surgery-tldr.jpg more photos here: RC surgery gallery
20240313-photoelectric-mount-parked-sensor-circuit-1000x750.jpg Prototype of an extra safety circuit for the mount and roof motor. It is a photoelectric sensor controlling a relay which makes sure that the roof motor variable frequency drive can only operate when the mount is parked. Such a safety system was already built into the software driving the mount and the roof motor so this is an extra fully independent safety circuit.
20240107-Integra85-damage-1-stuck-set-screw.jpg
20230827-RC-with-Hotech-ACT-2nd-attempt-small.jpg /
20230830-RC-with-Hotech-ACT-3rd-attempt-small.jpg /
Hotech-ACT collimation test and self-service the HOTECH Advanced CT Laser Collimator
20230417-arduino-focuser-collage.jpg
20230408-ACT-collimation-success.jpg
rc collimation with restricted /
20230305-RC-with-Hotech-ACT-baseline-collimation-small.jpg
20220410-asi1600-maybe-oil-on-sensor.png
RC 20210313-initial-collimation-after-transport.jpg /
20210427-secondary-collimation.jpg /
RC12withCCDT67backfocus.txt /
20210601-mount-RC-mosaic.jpg /
Rooftop dormer observatory with roll-off roof /
Weather station
20200727-FOVs.png
20190921-hazcam.jpg /
removing the cover while focusing
20190720-astrometry-api-lite.jpg /
20190720-astrometry-api-lite-swagger.jpg
20190512_mountwizzard3-on-linux.jpg
20190421-observatory-cam-moonlit.jpg /
20190424-rpi-noir-6s.jpg /
20180416-SXV-AO-LF-phd2-guiding.jpg the SXV-AO-LF firmware got restored and all works well again
20171023-INDI-10Micron-Alignment.png /
20180319-First-MountWizzard-Alignment-Model.jpg
20171017-murk-testing.png /
20171017-better-delete-test-pointing-model-first.png
20170119-intermittent-sound-in-declination-drive.mp3 /
20170208-intermittent-sound-in-declination-drive.mp3 /
20170208-park-sound-in-declination-drive.mp3 /
20170114_boxes.jpg /
20170114_all-out-of-bananas-so-here-is-a-cat-for-scale.jpg /
20161225-Meade-LX200-ACF-Visual-Back-is-quite-a-mirror.jpg /
20170103-SCT-visual-back-darkening-comparison.jpg /
20170104-flats-microbaffles-paint-velours.jpg /
20170104-SCT-visual-back-reflections-and-their-stretched-flats.jpg /
20161204-imaging-with-special-thanks-to-SX-for-AO-LF.jpg
20161029-40cm-dobson.jpg
20161027-promising-rpi-allsky-lens.jpg /
20161031_213718-rpi4.jpg
20161007-ZWO-ASI-1600MM-Cool-kit_and_Baader-7nm-Ha.jpg /
20161009-imaging-train.jpg
20160604-bino-PST.jpg
20160515_Arduino_nano_A4988_stepper_one16th_per_step_for_focuser.jpg /
20160516_Meade_microfocuser_with_stepper_1stepis4um.jpg
/
20160518-DCD-INDI-MoonLite-focuser.jpg /
20160526_focuser-electronics-boxed-up.jpg
20160409-wtf-happened-here-skytemp_large_now-1d.png
20160403-SX-AO_via_INDI_in_PHD2_dialog_on_Linux.jpg code
20160328-porting-SX-AO-support-to-Linux-in-PHD2.jpg code
20151122-NoIR-rpi-in-a-box-allsky-camera-test.jpg
/
20151122-NoIR-rpi-in-a-box-first-light.jpg
/
20151123_181018-night-test-6s-800iso.jpg
/
20151126-648x486.mp4
/
20151217_rpi3-wider-view.jpg
/
20151229_rpi3_diff_wide_lens.jpg
20150813-lifting-column-62cm-127cm.jpg
20150911_pier_with_lifting_column.jpg
20151117-unknown-steppers.jpg
20151118-stepper-diagram.png
20150627-rainsensors_pulse_time_on_small_drop-DS1054Z.png
20130609_173941b.jpg An imaging train
20130330-Dobson-25cm.jpg, a pure grab-and-go Visual instrument
20120327-SX-OAG-Lodestar-CanonEOS40D-no-guider-focus.jpg
/
20120708-SX-OAG-Lodestar-30mm-extension-tube.jpg
Telescope Cover #1
/
#2
/
#3
/
Final
Pier-parts
/
Plate
/
Parts
/
PartsWelded
/
SideBySideSetup
/
Hole
/
MixingMudTest
/
Base
/
PipeCutting
/
Pipe
/
Covered
CelestronDoesNotFitInAMDby1mm.jpg
200910-SV102ED-EQ5.jpg
LX200-10_40D_20X80_pict7058.jpg
LX200-10_on_wheels
LX200-10-f6.3_focal_reducer-micro_focuser-2inch_diagonal-cannot_do_polar_alignment-img_1654.jpg
3 EWSK leentelescopen, 2001
Imaging tests
20240205-hotech-act-zero-measurement.jpg Baseline measurement shows that there are improvement options. /
20240208-next-morning.jpg Secondary mirror drift
20240131-moving-dust.jpg /
20240204-crap-more-big-rings.jpg /
20231218-NGC-1499-30x300sHa-50x60sGB-2h30m.jpg
20231111-NGC-6607-3x600sL-unguided.jpg
20230602-astrosleuthv2-comparison.jpg
20221215-focus-success-with-centroid.png
20220423-a-few-rounds-of-EZ-denoise-in-PixInsight.jpg
20220328-Taking-Flats.jpg
20211122_defocusing.jpg
20211015-Anouk-Capella_APP_PI_ABE_PCC_ACDNR_Gimp_23x10s_60mmf6_EOS550D.jpg
20210823-collimation-is-off-1000x1000.jpg /
20210824-cardboard-collimation.jpg /
20210823-collimation-adjusted.jpg / <accident> /
20211012-203242-ccdiel-collimation-where-to-start.png /
20211012-ccdiel-collimation1.mkv /
20210621-FWHM-Eccentricity.jpg
First light RC12 20210606-M53-ABE-STF-Curves-42x20sL-14m.jpg 14min of 42x20sL, SQM 18.2 at the end of the test, forgot my cooler: sensor at 17C, no darks, no flats, no guiding, no polar alignment, 0.47 arcsec/pix, 37x28 arcminutes. /
20210614-M106-10x30sLRGB-20min--no-cooling-APP-Gimp.jpg /
20200621-AstroPixelSimulator.png /
20200621-AstroPixelSimulator-simulations.png /
stf-PI-APP-EKOS.jpg /
20200530-100-dark-subs-still-amp-glow.jpg /
20200530-about-abe-and-dbe-amp-glow.jpg /
20200531-stf-75s-dark-at--15-and--20C.jpg /
20200530-100-dark-subs-masterdark-in-pi-stacked-in-app-less-amp-glow.jpg
20200531-APP-vs-PI-masterdark-of-100-darks--final-stack-in-APP.jpg /
20200531-single-dark-and-APP-vs-PI-masterdark-of-100-darks--final-stacks-in-APP.jpg /
20200407-APP-Siril-PI-APP.png
20190901-fireworks-galaxy-single-600s-frame.jpg
Zero measurement 20190528-tribahtinov-arcturus-5s.jpg /
20190529-tribahtinov-4regions.jpg /
20190531-collimation-with-tribahtinov.jpg /
20181012-calibrated-raw-dark-flat.jpg
20180319-M51-L1x300s-unguided.jpg /
20180320-M51-L1x300s-unguided.jpg /
20170105-some-rosette-nebula-dust.jpg
20161231-single-flat_left-before_right-after_black-ring-painting.jpg /
201612310-left-before_right-after_telescope-black-paint.jpg
20161218-need-a-better-background-extraction.jpg /
20161221-green-master-flat-AtrousWavelets4-13-BoostedSTF.jpg /
20161221-master-dark-AtrousWavelets4-14-BoostedSTF.jpg /
20161222-something-really-messed-up-this-master-bias-frame.jpg
20161211-this_star_RGB_registered_fine.jpg /
20161211-5x60s_RGB_registration.jpg /
20161211-twin_quasar-and-ngc3079-25x600s-lum-STF.jpg /
20161202-Kstars-WCS-preview-at-3m.jpg
Promising first light 20161128-light1-STF.jpg / still occasional guide issue 20161129-CGE-wanders-off.jpg /
20161204-bad-CGE.jpg /
20161204-bad-bad-CGE.jpg
something is happening 20161031_202512-rpi2.jpg / day
20161104-hazcam2.jpg . RGB something result 20161031-1.png / issues 20161031-1-issues.jpg / Aladin 20161031-1-Aladin.jpg
20161003-allsky-star-counting.jpg /
20161003_212649-rpi3.jpg
20160827-phd2-drift-alignment-RA-is-pretty-good-already-DEC-needs-work.jpg
20160501-PHD2-CGE-guiding-2500mm-bad-RA.jpg /
20160502-CGE-bad-guiding.png /
20160503-PHD2-CGE-guiding-bad-RA-LogViewer.jpg
20160504-PHD2-CGE-guiding-much-better-loosened-worm.jpg /
20160505-PHD2-CGE-guiding-fixed-worm-wormwheel-binding.jpg /
20160505-PHD2-Logview-CGE-binding-comparison.png /
20160325-first-test-frame_unfocused_unaligned_1s.jpg
20100216-Rosetta-20x250s800iso-SV102ED-EOS40D
unprocessed /
8bitGimp /
PI-theNoiseIsDevastating
20120909_ItIsGuiding_SX-AO-LF_Lodestar_MaxImDL.jpg
myFirstTheliStack_everythingMustHaveGoneWrong_:-D_.jpg
20110601-CGE-dec-guiding-issue.png
/
201106110-CGE-PE-TopNearArcturus_W-BottomNearAltair_E-900s-unbalanced.jpg
PS
/
Gimp
Gimp-SimpleBilateralBlur.jpg
20100422-NotGuidedNotAligned.jpg
20100320-SV102ED-EOS40D-CollimationIsOff.jpg
20100103-mraw-dss-comparison.jpg
P2P-PE-20090918.jpg
Bahtinov-masks-10cm-and-25cm-img_2416.jpg
Bahtinov-mask-focus-result-20081108-IMG_0001.jpg
first_guiding_result_20081029.jpg
DriftAlign-200s
firstLight-20081028-theWebcamWorks.jpg
tracking-20080908-and-training-result.jpg
tracking-altair-20080815-1600iso-300s-IMG_0009.jpg
tracking-altair-20080816-1600iso-30s-IMG_0007_1.jpg
tracking-altair-20080823-1600iso-720s-IMG_0018.jpg
tracking-altair-20080823-400iso-960s-IMG_0019.jpg
tracking-altair-20080823-neighbours-1600iso-720s-IMG_0018.jpg
focus-problem-20080403_1600iso_s400_pf_raw_img_1228.jpg
Star parties
20101030-SterrenwachtEindhoven-NachtVanDeNacht.jpg
20100417-StarpartyBladelNetersel.jpg
20090131-StarpartyBladelNetersel_2345.jpg
20081227-StarpartyBladelNetersel_2305.jpg
Earth
20220428-M63-satellite-pollution.jpg
20210813_015155-meteor.jpg
2019-2020.jpg
20190628_213454-rpi3.jpg
20120325-moon-4246.jpg
20100813-Perseid-d2.jpg
/
raw
20100422-Moon-1frame_0.005s_800iso_25cmLX200_EOS40D.jpg
20100129-MoonAndMars-40D.jpg
/
20100129-MoonAndMars-40D-annotated.jpg
Satellites.html
Moon-20071117-unprocessed-img_0080.jpg
Solar system
20210610-partial-solar-eclipse.jpg
20210306-Pleiades_Mars_17x60s_EOS40D.jpg
20201218-moon-jupiter-saturn.jpg single 4s exposure with kit 17-85mm zoom lens at 17mm, f/4.0, manual focus, no image stabilization, iso 100, stock Canon EOS 40D on a tripod.
20160605-Sol-PST_2xBarlow_DMK23U445_Stackistry_Gimp.jpg /
20160605-Sol-PST_2xBarlow_DMK23U445_Stackistry_Gimp_s.jpg
20130314-C2011L4-Panstarrs-img_4582.jpg
20120514-Sol-1476-b.jpg
Jupiter-20090918-Galileoscope.jpg
Sun-20090524-Baader+UvIr+UHC-img_2670s.jpg small /
Sun-20090524-Baader+UvIr+UHC-img_2670.jpg
Sun-20090524-Baader+UvIr+UHC-img_2673s.jpg small /
Sun-20090524-Baader+UvIr+UHC-img_2673.jpg
Sun-20090524-Baader+UvIr-img_2676s.jpg small /
Sun-20090524-Baader+UvIr-img_2676.jpg
Moon-Venus-Jupiter-20081202-img_2189.jpg
Comet_17P_Holmes-20071118-Unprocessed_8s_iso1600_17mm-img_0118.jpg
Comet_17P_Holmes-20071117-Unprocessed_20s-img_0081.jpg
/ cleaned up :
20071212-Comet-Holmes-1x20s-800iso-85mm-img81b.jpg
Comet_17P_Holmes-20071117-Unprocessed_20s-img_0070.jpg
Deep space
20230406-IC1795-SV102ED-ASI1600-50x60sHa-10x60sGB.jpg
20221212-SH2-188-30x30sLRGB-25x120sHa-1h50m.jpg
20220820-IC1318-67x30sLRGB-60x300sHalpha-7h14m-b.jpg
20220810-Sharpless101-100x30sLRGB-59x300sHa-8h15m.jpg
20220704-Barnard-344-50x300sHa-20x30sGB-4h30m.jpg and some working versions 20220704-Barnard-344-versions.jpg
20220322-NGC436-52x30sL-17x30sRGB-51min.jpg and collimation inspection on
20220322-NGC_436_Light_Lum_10_secs_2022-03-22T22-54-41_001.jpg
20211221-IC1805-Heart-Nebula-center-25x180sHa-39x30sGB-110m.jpg
20211027-IC1396-Elephant-Trunk-20x30sGB-25x300sHa-145m.jpg
20210922-Piece-of-Veil-40x30sL-5x30sRGB-20x120sHa-1h5m.jpg /
reprocess
20210904-M33-140L20RGBx30s-1h50m.jpg
20210904-NGC6946-50L10RGBx30s-40min.jpg 30cmRC /
20210904-NGC6946-50L10RGBx30s-40min-s.jpg
20200410-NGC7822-HD224992-area-15x1800sHa.jpg 15x1800s (7.5h) Ha (7nm), 19x13 arcminutes, 0.52 arcsec/pixel.
20180911-NGC6914-10x60sLRGB.jpg quick stack of EKOS scheduled frames.
Field center: (RA,Dec) = (306.152817, 42.516194) deg.
Field center: (RA H:M:S, Dec D:M:S) = (20:24:36.676, +42:30:58.299).
Field size: 16.7708 x 11.9754 arcminutes
Field rotation angle: up is 168.669 degrees E of N
20180806-NGC6914-14x600sL4x600sRGB.jpg 18x12.5 arc minute. Original scaled down with a factor 4 results in this 1 arcsecond per pixel image. Just over 4h total integration time.
20100521-M13-IC4617_10x270s
20100521-Veil-NGC6960-8x420s.jpg
/
raw from dss
20090818-DoubleCluster-NGC884-31x30s_1600iso_SV102ED_40D.jpg
20090818-Albireo_11x30s_1600iso_SV102ED_40D.jpg
20090818-M39_30x30s_1600iso_SV102ED_40D.jpg
20090817-NGC7662-BlueSnowball_13x30s_1600iso_SV102ED_40D.jpg
20090531-M57_30x30s_1600iso_SV102ED_40D.jpg
M13-20090531-31x30s-1600iso-SV102ED-40D.jpg / M13-20090531-31x30s-1600iso-SV102ED-40D-2666x2000.jpg
HorseHead-30min-1600iso-UHCfilter-IMG_0007.jpg
/
reprocessed 20100507
20081229-M42-7x300s-800iso.jpg
Orion-20081228-Bladel-30s-1600iso-img_2284.jpg
OrionsSword-20081227-30s-1600iso-img_2284.jpg
Orion-20081227-30s-1600iso-img_2270.jpg
M27 20080913.html
M103 20080913.html
M13-20080808-30s-1600iso-Canon85mm-img_1667.jpg
/ PI reprocess
ameland-west-20080729-iso1000-30s-img_1541-972x648.jpg
M3-20080511-3200asa-44s-IMG_0011small.jpg
M42-20080210-f63-1600asa-36s-UHC-IMG_0013.jpg
/
reprocessed 20100219
M42-20080210-f63-1600asa-60s-IMG_0012.jpg
/
reprocessed 20100219
m42-IMG_0025.jpg
m42-IMG_0064.jpg
m42-stackof15b.jpg
m42-stackof15c-s.jpg
m42-stackof15f.jpg
/ m42-stackof15f-caught-a-proplyds.jpg
Deep deep space
20240309-NGC-3077-440x60sL-7h20m.jpg
20240126-ACO-568--aka--Gemini-Galaxy-Cluster-165x60sL_15x60sRGB_3h30m.jpg / annotated / Imaged under a near full moon :P
20230420-MarkariansChain-SV102ED-ASI1600-570x30sL-10x30sRGB-5h.jpg
20230218-NGC2776-10x300sLRGB-3h20m.jpg
20220602-NGC4490-Cocoon-223x30sL-40x30sRGB-2h51m.jpg
20220508-M94-360x30sL-60x30sRGB-4h30m.jpg / reprocess:
20220508-M94-360x30sL-60x30sRGB-4h30m-b.jpg
20220427-M63-976x30sL-100x30sR-50x30sG-34x30sB-9h40m.jpg /
20220427-M63-976x30sL-100x30sR-50x30sG-34x30sB-9h40m-brighter.jpg
20220416-M101-1381x30sL-50x30sRGB-13h.jpg
20220325-M81-HolmbergIX-1336x30sL-50x30sRGB-12h.jpg /
20220325-M81-HolmbergIX-1336x30sL-50x30sRGB-12h-reprocess.jpg
20211010-M31-30x30sL-10x30sRGB-30min.jpg only a 3-star model for polar alignment and no guiding → bad tracking, no camera cooling, no flats, bad focus, bad collimation ...
20210211_APM08279+5255_120x30sL_20x30sRGB_90m_annotated.jpg /
20210211_APM08279+5255_120x30sL_20x30sRGB_90m.jpg /
20210414_APM08279+5255_300x30sL_43x30sR_50x30sG_5x30sB_3h19m_annotated.jpg /
20210414_APM08279+5255_3h19m_timeline.jpg
20200608-NGC5701-nearby-quasar-Aladin-inset.png
20200512-SN2020jfo-M61-1x600sL-annotated.jpg /
20200512-SN2020jfo-M61-5x600sL-3x600sRGB-small.jpg /
20200512-SN2020jfo-M61-5x600sL-3x600sRGB-annotated-small.jpg /
20200425-M104-13x300sL-4x300sRGB.jpg /
20200425-M104-18x300sL-5x300sRGB.jpg
Corona Borealis Cluster / Abell 2065 / ACO2065
2019
20190601-Abell2065-14x600sL-9x6arcmin.jpg /
20190601-Abell2065-14x600sL-547galaxies-mag20.5.jpg /
20190603_sdss.jpg /
20190610-ACO2065-26x600sL-annotated-800x800.jpg /
20190701-ACO2065-26x600sL-3x600sRGB.jpg /
20190706-ACO2065-26x600sL-3x600sRGB.jpg
2021 reprocess 20210113-ACO2065-122x600sL-12x600sRGB-s.jpg
2022 reprocess 20220523-ACO2065-122x600sL-12x600sRGB-26h20m-e.jpg
20190527-NGC2998-and-friends-52x300sL.jpg
20181005-NGC499-4x600sRGB.jpg /
4 corners /
annotated simple /
full annotated SDSS galaxies in yellow up to mag 19.1.
20180505-M51-10x180sL-5x180sRGB.jpg
201611-NGC3079-Q0957+561_needs_work1.jpg /
201611-NGC3079-Q0957+561_needs_work1-annotated.jpg /
20100504-M63-6x450s-wavelets.jpg /
gif /
raw stack
M31-20081222-300s-3200ISO-IMG_0004.jpg
M31 20080913.html
Ehh
observatory todo list
Things Observatory
GoogleEarth Light Pollution
Europe2 /
Netherlands /
Europe1 /
kmz /
LP-avex-asso-org-Eindhoven.jpg
sterrenwacht-eindhoven-telescoop.jpg
Stellarium - North Celestial Pole
20100124-stellarium-buildbot-first-steps.png
/
gcc10.fsffrance.org:8010/waterfall?reload=99
PlateSolvingWithAstrometryNet.jpg
Crude astro photography mount performance overview.
Astroforecast Sky Transparency Forecast
trail_of_LONEOS_C2007F1_in_Xephem-3_7_2.png
Lego-358-367-Moon_Rocket-Lunar_Lander-img_0098.jpg
Code
compare-telescopes.html
Code on Github: https://github.com/d33psky/compare-telescopes
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