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This page shows a selection of false colour images which provide additional information or detail to original monochrome image.
Examples of a variety of false colour images are shown within the sections below .
Many are set side by side with a conventional monochromatic image display.I normally use fv for creating false colour image displays. fv is FITS file viewer and editor developed at the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA/ GSFC.
fv provides a number of useful built in colour bars:
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Inverse Spectrum is one of my favourite false colour displays, often used with either Square Root or Log brightness scaling.
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M51 (Canes Venatici) |
M51 - false colour |
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| CCD Image 3 x 2 min (average combine), clear filter 2006-01-02 02:12h UT (#108135-37) |
False Colour CCD Image Log brightness scaling, (image details as left) |
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M58 (Virgo) |
M58 - false colour |
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| CCD Image 3 x 180 sec exposure (average combine), 2x2 binning, C Filter, linear brightness scaling 2007-05-19 23:43h UT (#198299-301) |
False Colour CCD Image Log brightness scaling, False Colour (Inverse Spectrum) (image details as left) |
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M66 (Leo) |
M66 - false colour |
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| CCD Image 5 x 2 min (average combine), C Filter 2004-12-11 05:42 h UT (#79010-14) |
Enhanced False Colour Display (Logarithmic Scaling, Range 460-3300 ADU, Inverse Spectrum) (image details as left) |
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M74 (Pisces) |
M74 - false colour |
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CCD Image 4 x 3 min exposure (summed), 2x2 binning , C Filter Linear Scale 2006-09-03 00:52 h UT (#137096-99) |
False Colour CCD Image Square Root brightness scaling (image details as left) |
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M90 (Virgo) |
M90 - false colour |
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| CCD Image 3 x 180 sec exposure (average combine), 2x2 binning, C Filter, linear brightness scaling 2007-05-20 00:05h UT (#198310-15) |
CCD Image Square Root brightness scaling, False Colour (Inverse Spectrum) (image details as left) |
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M94 (Canes Venatici) |
M94 - False Colour |
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| CCD Image 3 x 180s, 2x2 binning, C Filter Square Root brightness scaling 2007-04-27 21:59 hUT (#192103-05) |
False Colour CCD Image Image Details as left Square root brightness scaling, False Colour (inverse spectrum) |
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M98 (Coma Berenices) |
M98 - false colour |
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CCD Image 7 x 180s exposure (average combine), 2x2 binning, C filter, 2007-03-13 00:25h UT (#182297-303) |
False Colour CCD Image Square Root brightness scaling, False Colour (inverse spectrum) Image details as above |
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M99 (Coma Berenices) |
M99 - false colour |
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CCD Image (linear scale, cropped) 4 x 1 min exposure (average combine), 3x3 binning, C Filter 2009-11-27 06:02 h UT (#400217-21) 12" LX200R (at f/5.7) + ST-10XME |
False Colour CCD Image Square Root brightness scaling, Inverse spectrum colour scale Image details as above |
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M100 (Ursa Major) with SN 2006x |
M100 - false colour |
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Annotated CCD Image 5 x 2 min exposure (average combine), 2x2 binning, C Filter 2006-02-20 23:17h UT (#115064-68) |
CCD Image - false colour, log brightness scaling 5 x 2 min exposure (average combine), 2x2 binning, C Filter 2006-02-20 23:17h UT (#115064-68) |
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M109 (Ursa Major) |
M109 - false colour |
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CCD Image 6 x 2 min (average combine), clear filter 2006-01-02 01:12h UT (#108113-18) |
CCD Image (false colour, log brightness scaling) CCD image as left |
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NGC 2903 (Leo) |
NGC 2903 - false colour |
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CCD Image (50% size, square root scale) 4 x 120s exposure (average combine), 3x3 binning, C Filter 2021-03-05 23:05 UT (#867106-09) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
CCD Image (50% size, square root scale) Inverse Spectrum (details as left) |
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NGC 3344 (Leo Minor) |
NGC 3344 - false colour |
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CCD Image 7 x 180s exposure (average combine), 2x2 binning, C filter, 2007-02-18 00:01h UT (#176211-17) |
CCD Image Log brightness scaling, Inverse Spectrum (details as left) |
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NGC 3184 (Ursa Major) |
NGC 3184 - false colour |
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CCD Image (75% scale, cropped) 6 x 120 sec exposure (average combine), 3x3 binning, C Filter 2012-03-05 21:56 h UT (#545094-99) 12" LX200R (at f/9.7) + ST-10XME |
CCD Image Linear scaling, Inverse Spectrum (details as left) |
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NGC 3521 (Leo) |
NGC 3521 - false colour |
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| CCD Image 7 x 180s exposure (average combine), 2x2 binning, C filter, 2007-02-18 00:25h UT (#176221-27) |
CCD Image Square Root brightness scaling, Inverse Spectrum (details as left) |
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NGC 3953 (Ursa Major) with SN 2006bp |
NGC 3953 - false colour |
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| Annotated CCD Image 5 x 60s exposure (average combine), 2x2 binning, C Filter 2006-05-25 00:32 hUT (#127112-16) |
False Colour CCD Image Log Scale, False Colour (inverse spectrum) (details as left) |
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NGC 4030 with SN 2007aa (Virgo) |
NGC 4030 - False colour |
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| CCD Image 5 x 180s exposure (average combine), 2x2 binning, C filter, 2007-03-12 23:13h UT (#182260-64) |
False Colour CCD Image Square Root brightness scaling, False Colour (inverse spectrum) Image details as left |
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NGC 4559 / Caldwell 36 (Coma Berenices) |
NGC 4559- false colour |
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CCD Image 5 x 180s exposure (average combine), 2x2 binning, C filter, 2007-03-03 23:46h UT (#180385-89) |
False Colour CCD Image Square Root brightness scaling Image details as left |
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NGC 4490 / NGC 4485 (Canes Venatici) |
NGC 4490 / NGC 4485 - detail |
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| CCD Image 5 x 180s exposure (average combine), 2x2 binning, C Filter 2006-12-20 06:30h UT (#167511-15) |
False Colour CCD Image Square root brightness scaling Image details as left |
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NGC 5005 / Caldwell 29 (Canes Venatici) |
NGC 5005 - false colour |
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| CCD Image 3 x 180s exposure (average combine), 2x2 binning, C filter, 2007-03-03 23:23h UT (#180377-79) |
False Colour CCD Image Square Root brightness scaling, False Colour (inverse spectrum) Image details as left |
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NGC 7606 / Herschel I-104 (Aquarius) |
NGC 7606 - false colour |
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| CCD Image 5 x 120s exposure (average combine), 2x2 binning, C filter, 2008-10-04 23:20h UT (#310214-18) |
False Colour CCD Image Square Root brightness scaling, False Colour (inverse spectrum) Image details as left |
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M3 (Canes Venatici) |
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CCD Image (75% size) 120s exposure, 2x2 binning, C filter, Square Root brightness scaling, Gamma Correction 2007-04-05 01:34 hUT (#189236) |
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M3 - false colour |
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False Colour CCD Image (75% size) |
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M53 (Coma Berenices) |
M53 - false colour |
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| CCD Image, linear brightness scaling 3 x 60 sec exposure (average combine), 2x2 binning, C Filter 2007-05-19 22:12h UT (#198165-67) |
False Colour CCD Image Square root brightness scaling, False Colour (Inverse Spectrum) (image details as left) |
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Comet C/2006 M4 (Swan) |
Comet C/2006 M4 (Swan) |
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| CCD Image 5 x 60s exposure (average combine, aligned on comet), 2x2 binning, C filter Linear scale with range adjusted to show detail in tail 2006-10-28 20:23h UT (#150012-16) |
False colour CCD Image Log Scale (image details as left) |
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Comet 73/P Schwassmann-Wachmann 3-B |
Comet 73/P Schwassmann-Wachmann 3-B |
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| CCD Image (50% size) 15 x 30s, 1x1 binning, C Filter Aligned on comet nucleus & stacked 2006-05-12 23:08h UT (#126058-72) |
False colour CCD Image Log Scale (image details as left) |
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M1 (Taurus) |
M1 - false colour |
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| CCD Image (200% size) 6 x 180s exposure (average combine), 2x2 binning, C Filter, Linear brightness scaling 2007-09-11 01:05 hUT (#211121-26) |
False Colour CCD Image Square root brightness scaling, False Colour (Inverse Spectrum) (image details as left) |
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| Moon (94% phase) | Moon (94% phase) - False Colour | |
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| B&W CCD Image Mosaic (3 x 4) 0.11 sec exposure, B Filter 1x1 Binning/Resized 2006-01-11 23:06h UT (#110119-32) [ Full Size ] |
False Colour CCD Image Mosaic (3 x 4) Image details as left [ Full Size ] |
| East region of the Moon in False Colour |
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Linear Scale (inverse spectrum) 0.11 sec exposure, V Filter, 1x1 Binning. Unsharp Masked 2006-01-11 23:23h UT (#110157) |
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Hot is another colour bar that I frequently used, often with either linear or Square Root brightness scaling.
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M42 (Orion) |
M42 - detail |
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| CCD Image Logarithmic Scaling (190-60000 ADU) 9 x 15 sec exposure (medium combine), C Filter 2005-01-05 23:36 h UT (#82110-18) |
False Colour CCD Image Logarithmic Scaling (Image as left) |
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NGC 1491 (Perseus) |
NGC 1491 - detail |
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| CCD Image 3 x 180s exposure (average combine), 2x2 binning, C Filter 2006-12-15 23:46h UT (#163226-28) |
False CCD Image Square root brightness scaling Image Details as left |
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NGC 4490 / NGC 4485 (Canes Venatici) |
NGC 4490 / NGC 4485 - detail (false colour) |
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| CCD Image 5 x 180s exposure (average combine), 2x2 binning, C Filter 2006-12-20 06:30h UT (#167511-15) |
False Colour CCD Image (150% size) Square root brightness scaling, rotated. Image details as left |
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Cold is a colour bar that I occasionally use, most often for comets, used either linear or Square Root brightness scaling.
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Comet C/2006 M4 (Swan) |
Comet C/2006 M4 (Swan) - false colour |
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CCD Image 5 x 60s exposure (average combine, aligned on comet), 2x2 binning, C filter, Linear scale 2006-12-06 17:42h UT (#159035-39) |
False Colour CCD Image Log brightness scaling (3000 ADU range) (details as left) |
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Comet C/2006 M4 (Swan) |
Comet C/2006 M4 (Swan) - false colour |
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CCD Image 2 x 60s exposure, 2x2 binning (average combine), C Filter 2006-09-30 19:19h UT (#144015-16) |
False Colour CCD Image Log brightness scaling (3000 ADU range) (details as left) |
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NGC 2371 (Gemini) [ Herschel H316-2 ] |
NGC 2371 - false colour |
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CCD Image (cropped, linear scale) 4 x 60s (average combine), 2x2 binning, V Filter 2010-02-20 21:59 h UT (#414277-81) 12" LX200R (at f/9.7) + ST-10XME |
False Colour
CCD Image (cropped, log scale) Image details as left) |
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Blkbdy is a colour bar that I occasionally use.
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M1 (Taurus) |
M1 (Taurus) - false colour |
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| CCD Image (50% size) 14 x 60 sec exposure (average), C filter 2005-10-09 04:43 h UT (#99235-48 {S98} ) (Full Size) |
False Colour CCD Image Linear Scale, blkbdy color table Details as left (Full Size) |
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Other Colour Bars are occasionally used for making false colour images
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M74 (Pisces) |
M74 (false colour) |
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| CCD Image 6x60s exposure (average combine), C Filter 2005-09-02 22:51 h UT (#93055-60) |
CCD Image False Colour 3x60s exposure (average combine), C Filter Logarithmic Scaling, False Colour 2005-09-03 00:40 h UT (#93152-54) |
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NGC 70 Galaxy Group (Andromeda) |
NGC 70 Galaxy Group (false colour) |
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| CCD Image (Negative), 9 x 60s (summed) , C Filter 2004-09-07 21:35 to 21:45h UT (#71041-49) |
False Colour
CCD Image (Square root brightness scaling) (Image details as left) |
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IC 348 (Perseus) |
IC 348 (false colour) |
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| CCD Image (50% size) 14 x 60 sec exposure (average), C filter 2005-10-09 04:43 h UT (#99235-48 {S98} ) (Full Size) |
False Colour CCD Image Logarithmic Scaling (details as left) |
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M76 (Perseus) |
M76 (False-Colour Display) |
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| CCD Image, 7 x 60 sec exposure (average combine) Clear Filter 2004-08-22 23:15 h UT (#68129+) |
False Colour CCD Image (Logarithmic Scaling, Spectrum Colour Scale) 7 x 60 sec exposure (average combine) Clear Filter 2004-08-22 23:15 h UT (#68129+) |
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IC 434 - Horsehead Nebula (Orion) |
IC 434 - Horsehead Nebula - false colour |
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| CCD Image 19 x 1 min exposure (average combine), C Filter, rotated 2005-01-05 23:06h UT (#82085-105) |
False Colour CCD Image 19 x 1 min exposure (average combine), C Filter, rotated 2005-01-05 23:06h UT (#82085-105) |
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This section contains images that use false colour
to help highlight specific detail. |
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M87 (Virgo) |
M87 (false colour image) |
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| CCD Image, 5 x 60 sec exposure
(summed) 2004-03-29 00:14 h UT (#64163-67) |
CCD Image (details as above) Log Scale, False Colour |
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M87 - jet (Inverse Spectrum)
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CCD Image (details as above) Unsharp Masked, Log Scale, False Colour |
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M87 - jet (Cold Colour Bar) |
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CCD Image (details as above) Unsharp Masked, Log Scale, False Colour |
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| This Web Page: | False Colour Images |
| Last Updated : | 2021-08-13 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
