View allAll Photos Tagged DeepSkyStacker

6 usable 60s lights, 10 darks, 20 flats, 20 bias. Canon EOS 450D DSLR prime focus, ISO1600. Baader Neodymium filter and coma corrector. Sky-Watcher 150P Explorer on EQ3-2 mount. DeepSkyStacker > PixInsight > PhotoShop. This was a test to see if I could leave my intervalometer to take the light frame as well as the darks.

Milky Way in the constellation Cygnus

*

KameramodellCanon EOS 650D

AufnahmemodusManuelle Belichtung

Tv (Verschlusszeit)10 Aufnahmen je 30 aufaddiert

Av (Blendenzahl)3.5

MessmodusSpotmessung

Filmempfindlichkeit (ISO)1600

Automatische Filmempfindlichkeit (ISO)AUS

ObjektivEF-S60mm f/2.8 Macro USM

Brennweite60.0mm

*

Nachführung mit der Reisemontierung „star adventurer“, siehe:

www.google.de/?gfe_rd=cr&ei=LudPU53qKqOH8Qf67IGoDw#q=...

*

Bearbeitung:

DeepSkyStacker

Photoshop Elements 10

 

---Photo details----

Stacks : 9 frames, 3darks

Exposure Time : 9x8min (1h 24min total) @ ISO 400

Stack program : DeepSkyStacker

Stack mode : Auto Adaptive Weighted Average

Post processing : CS5 for : curves adjustments, Lightroom 4 for local adjustments (contrast, exposure)

---Photo scope---

Camera : Sony SLT-A77

Tube : Skywatcher Explorer 150P

Type : Newton

Focal length : 750 mm

Aperture : F/5

---Guide scope---

Camera : Starlight Xpress Lodestar

Tube : Skywatcher StarTravel-102

Type : Refractor

Focal length : 500 mm

Aperture : F/4.9

---Mount---

Mount : Skywatcher EQ-6

 

---Image details---

Now in a new flavor : Extreme coma!

 

Objects

----------

 

--

Source : dso-browser.com/

Canon 450D Full Spectrum f/2 C-11 /CGEM-DX / Hyperstar. 25 lights, no Darks, no Bias, no Flats, stacked in Deepskystacker. No filters.

 

The Horsehead Nebula (also known as Barnard 33 ) is a dark nebula in the constellation Orion. The nebula is located just to the south of the star Alnitak, which is farthest east on Orion's Belt, and is part of the much larger Orion Molecular Cloud Complex. The nebula was first recorded in 1888 by Scottish astronomer Williamina Fleming on photographic plate B2312 taken at the Harvard College Observatory. The Horsehead Nebula is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because of the shape of its swirling cloud of dark dust and gases, which bears some resemblance to a horse's head when viewed from Earth.

en.wikipedia.org/wiki/Horsehead_Nebula

 

Canon 40D

Canon EF f/2.8 L IS 70-200mm @ f/4, 200mm.

20 x 90 seconds.

Astrotrac mount. Stacked in DSS. Processed in CS4.

Total 3 hr & 20 min exposure: 16 x 10 and 10 x 4-minutes at ISO 1600, f7.5. Sub-exposures stacked using DeepSkyStacker, followed by curves & colour-balance adjustment using Canon Photo Professional & Paint Shop Pro.

 

Meade 127mm telescope & unmodded EOS 40D

Captured on September 30 2017 from a Bortle 5 zone.

 

Equipment:

* TPO 6" F/4 Imaging Newtonian

* Orion Sirius EQ-G

* Canon Rebel T3 (Full spectrum modified)

* High Point Scientific 2" Coma Corrector

* StarGuy 2" CLS-CCD filter

* Agena 50mm Deluxe Straight-Through Guide Scope

* ZWO ASI-120MC for guiding

 

Acquisition: 2 hours

* Lights- 18x300" at ISO 800 + 3x600" at ISO 800

* Darks-5

* Flats- 5

 

Software and Processing

Captured using Astrophotography tool and guiding done with PHD2 stacked with DeepSkyStacker.

 

Processed in Photoshop mostly going along the tutorial from Astrobackyard

Plugins used- Astronomy Tools Action Set and GradientXTerminator.

 

60 x 60 seconds, ISO 800

 

Gear: Orion 8" f/3.9 Astrograph, Canon 550d (unmodded), Baader MPCC

 

Calibration and post-processing in DeepSkyStacker and Pixinsight

 

Taken with a TMB92L, Canon T3i DSLR, and Celestron CG-4 mount. Consists of 25 light and 13 dark frames, each a 45-second exposure at ISO 800, stacked in DeepSkyStacker and processed in Photoshop.

Taken on iOptron SkyTracker with Canon 5D Mark III, Canon 400mm f5.6L, Canon EF 1.4X III in Katy, TX (Houston suburb with high light pollution)

 

560mm, f8, ISO 4000, 30 sec exposures

7 images stacked in DeepSkyStacker & processed in Photoshop cc 2014, cropped ~45%

   

Imaging telescopes or lenses: Sky-Watcher Equinox 80ED

Imaging cameras: QHY8L

Mounts: Skywatcher AZ EQ6 GT

Guiding telescopes or lenses: Celestron 102mm f/6.6 Achromat

Guiding cameras: Magzero MZ-5m

Software: DeepSkyStacker, photoshop, Absoft Neat Image

Accessories: TecnoSky Flattener 1x

Resolution: 3027x2007

Dates: Dec. 25, 2014

Frames: 12x300" -15C bin 1x1

Integration: 1.0 hours

Darks: ~39

Flats: ~52

Bias: ~42

Avg. Moon age: 3.25 days

Avg. Moon phase: 11.50%

Bortle Dark-Sky Scale: 3.00

RA center: 130.159 degrees

DEC center: 19.563 degrees

Pixel scale: 3.229 arcsec/pixel

Orientation: 93.090 degrees

Field radius: 1.629 degrees

Locations: Drassa, Corinth, Greece

Celestron EdgeHD 8" SCT

Advanced VX Mount (unguided)

Canon EOS T3i (600D)

8 x 30sec subs, ISO 1600, f/10

Stacked in DeepSkyStacker

Finished in Lightroom

Taken July 2013 from Stargate Observatory, MI

Oggetto: M31 - Galassia di Andromeda

Autore: Maurizio Ventura

Strumento: Skywatcher ED80 BLACK DIAMOND su HEQ5 Skyscan pro

Autoguida: Celestron Travelscope 70/400 + camera guida Orion Star Shoot autoguider B/N

Ripresa: Nikon D40x, 5x300s + 4x120s + 4x30s + 4x15s - 800 ISO

Luogo: Terminio (AV)

Data: 11/08/2012

Note: DeepSkyStacker e Photoshop.

If you look closely just slightly off-centre to the right you will see a faint fuzzy patch. That's a galaxy. The Great Andromeda Galaxy. On very dark nights you might be able to see it with the naked eye.

 

Four stacked images shot at f/2.8, 15 second exposure at ISO 800. Processed with DeepSkyStacker.

Twain Harte, California.

 

Unmodified Sony a7R and Astro-Tech AT65EDQ 65mm f/6.5 refractor mounted on a Losmandy G11 mount. 11 x 5 minute sub-frames, 5 averaged darks processed with DeepSkyStacker.

Having some problems with stacking in Deep Sky Stacker. I cant figure out why I get these angled streaks in my final image. Any help would be appreciated.

6-5min light

10 dark

21 bios

Nikon D300

ISO 800

The Triangulum Galaxy is a spiral galaxy 2.73 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC 598. The Triangulum Galaxy is the third-largest member of the Local Group of galaxies, behind the Milky Way and the Andromeda Galaxy (the largest). It is one of the most distant permanent objects that can be viewed with the naked eye.

 

The galaxy is the smallest spiral galaxy in the Local Group and is believed to be a satellite of the Andromeda Galaxy or on its rebound into the latter due to their interactions, velocities, and proximity to one another in the night sky.

 

Imaged on 11-12-20 and 11-13-20 from my backyard.

 

Explore Scientific ED102/ASI 533 MC Pro camera with IDAS LPS D-1 filter, and Stellarview FF/0.80FR.

90 second exposures at gain 104/offset 50

Total integration of about 9.5 hours.

Processed in DeepSkyStacker, Startools 1.7.438, and Photoshop.

These galaxies are close by at about 12 million light years distance. M81 is the furthest object that can be seen with the naked eye (under extremely dark clear skies, by someone with very good vision). The two galaxies are interacting gravitationally, M82 is irregular and undergoing massive star formation after passing near M81 around 100 million years ago.

 

24x 30 second exposures, shot on a Canon T1i at prime focus on a Meade 10" SN-10-AT telescope. Exposures were stacked and processed in Deep Sky Stacker. 12 Minutes total exposure time.

 

Shot from the dark skies of Osoyoos BC

Finally it was clear night.

Celestron Nexstar 130 SLT

Canon Eos 10D

27*15 sec.

DeepSkyStacker. Photoshop.

OTA: Celestron C10N, 10" f/4.7 newtonian reflector

Camera: ZWO ASI1600MM

Exposure: H-alpha 9x10min, O3 10x10min

Mount: CEM70G

Captured with SGP

Registered and stacked with DeepSkyStacker

Photographed from Round Rock TX (light pollution zone: red)

Taken with Canon Eos1100D 18-200mm lens

Tracking with Celestron Nexstar 130SLT tripod

40F * 30sec

Iso 1600

DeepSkyStacker

Photoshop

 

---Photo details----

Stacks : 30 frames (+ 10 darks)

Exposure Time : 30x2min (1h total) @ ISO 800

Stack program : DeepSkyStacker

Stack mode : Auto Adaptive Weighted Average

Post processing : Lightroom 4 for local adjustments (contrast, exposure)

---Photo scope---

Camera : Canon 40D

Tube : Skywatcher Explorer 150P

Type : Newton

Focal length : 750 mm

Aperture : F/5

---Guide scope---

Camera : Starlight Xpress Lodestar

Tube : Skywatcher StarTravel-102

Type : Refractor

Focal length : 500 mm

Aperture : F/4.9

---Mount---

Mount : Skywatcher EQ-6

 

---Image details---

Now in a new flavor : Extreme coma!

 

Objects

----------

 

--

Source : dso-browser.com/

80mm f6.8 triplet apo (Kson) and 1000D dslr with UHC filter. 14 three minute (ISO 800) subs stacked using Deepskystacker and processed in Photoshop.

Image taken in the early hours of 19/07/16 with full Moon shining.

---Photo details----

Stacks : 39 frames (in camera calibrated)

Exposure Time : 39x1min (39min total) @ ISO 800

Stack program : DeepSkyStacker

Stack mode : Auto Adaptive Weighted Average

Post processing : CS5 for : curves adjustments, Lightroom 4 for local adjustments (contrast, exposure)

---Photo scope---

Camera : Sony SLT-A55

Tube : Skywatcher Explorer 150P

Type : Newton

Focal length : 750 mm

Aperture : F/5

---Guide scope---

Camera : Starlight Xpress Lodestar

Tube : Skywatcher StarTravel-102

Type : Refractor

Focal length : 500 mm

Aperture : F/4.9

---Mount---

Mount : Skywatcher EQ-6

 

---Image details---

Now in a new flavor : Extreme coma!

 

Objects

----------

 

--

Source : dso-browser.com/

M81 , M82 and areas ,,

201 Light Frames

106 Bias Frames

101 Dark Frames

Manual Hands trackin lol

Total Exposure 13 mn and 20 sec with Magic Lantern Nightly

 

Stakced with Deep Sky Stacker 3.3.4

reedit in Digital Photo Professional 3.13.51.1

  

Single Frame details :

File name_MG_2447.CR2

File Size23.0MB

Camera ModelCanon EOS 600D

FirmwareFirmware Version 1.0.2

Shooting Date/Time4/18/2014 11:47:56 PM

AuthorMzytengaM

Copyright NoticeMzytengaM

Owner's Name

Shooting ModeManual Exposure

Tv(Shutter Speed)4

Av(Aperture Value)5.0

Metering ModeEvaluative Metering

ISO Speed3200

Auto ISO SpeedOFF

LensEF75-300mm f/4-5.6

Focal Length220.0mm

Image Size5184x3456

Aspect ratio3:2

Image QualityRAW

FlashOff

FE lockOFF

White Balance ModeColor Temperature(5200K)

AF ModeManual focusing

Picture StyleUser Defined 1(Auto)

Sharpness3

Contrast0

Saturation0

Color tone0

Color SpaceAdobe RGB

Long exposure noise reduction0:Off

High ISO speed noise reduction2:Strong

Highlight tone priority0:Disable

Auto Lighting OptimizerStandard

Peripheral illumination correctionEnable

Dust Delete DataNo

Drive ModeSelf-Timer Operation

Live View ShootingON

Camera Body No.sure

Commentno comments

 

Picture saved with settings applied.

鏡筒: 8cm F6 (笠井 BLANCA-80EDT) + 0.6x レデューサー

カメラ: OM-D E-M5

赤道儀: スカイメモS

 

288mm, F3.6, 10s, ISO1000 を DeepSkyStacker で8枚コンポジット。LightRoom CC でトリミング、トーンカーブ調整等。

 

左の非常に明るい星がアンタレス。その右斜め上の暗い球状星団がNGC6144。

右の大きな球状星団がM4。

Pléïades (M45) pris dans le Gers.

 

36 poses de 25 secondes (= 15 minutes en cumulé) + 36 Dark (et Dark Flat), 54 Flat et 51 Offset.

 

Stacké sous DeepSkyStacker.

 

Matériel : Monture Skywatcher Star Adventurer + Nikon D600 + Tamron 150-600 f/5-6.3 @400mm f/6

 

The moon lights up a Joshua Tree in Joshua Tree National Park in California as the stars shine bright above.

Taken using Skywatcher 80ED Pro, Nikon D3300, 137x30" lights (ISO 1600), 100 flats, 110, bias. Stacked in DeepSkyStacker and processed in Photoshop

80/480 TMB Apo, Canon EOS 7D (10 x 900s @ ISO 800; Darkabzug), DeepSkyStacker & Photoshop CS6

The Andromeda Galaxy. The smaller neighbour galaxy, Messier 110, is *just* visible to the right of Andromeda :)

 

Canon 350D and Canon 100mm macro lens. Untracked, on tripod.

 

138 exposures stacked in DeepSkyStacker (3 dark frames)

 

Exposure info:

5s

f/2.8

ISO1600

 

Ambient temperature was about -2C

Celestron Nexstar 130Slt

Canon Eos10D

50*20sec + 10darks

DeepSkyStacker

Photoshop

 

This was my second attemp to this, and now I got it.

I was suprised, there was other galaxy too. In my basic settings in starrynight, it wasnt´shown..

 

Reminds me of Gandalf's Dragon firework from the Fellowship Of The Ring.

First attempt with a Baader modified Canon 350D and Astronomik EOS-Clip CLS.

20 shots, 30 seconds each, ISO 1600, 3 darks.

Processed with DeepSkyStacker and PaintShop Pro X4

Update 2: www.flickr.com/photos/thedavewalker/6934601070/

Celestron Nexstar 130 Slt

Canon Eos 10D

DeepSkyStacker

Photoshop

 

54 Frames

Iso 3200 1600

10 Darks

30sec exposures

Total exposure 26min 59sec.

   

Shotdate: 2-2-2014

Camera: Nikon D3x

Optics: Celestron 9.25" EdgeHD

Mount: SkyWatcher NEQ6 Pro

Guiding: LVI SmartGuider2 on a F500mm f90mm APO

Exposure: 56 x 300 seconds

ISO-speed: 1600

Filters: None

 

Stacked in DeepSkyStacker 3.3.4 with 108 bias, 32 dark and 50 flat frames.

 

Post-processing in PixInsight 1.8.0.1071

 

Unfortunately my focus was of a bit.

Canon 450Dfs 25 lights 30 sec iso 1600 stacked in Deepskystacker f/7 reducer on C-11 / CGEM-DX

Nothing fancy here, just a simple stack of three unguided images without calibration frames. There was a lot of cloud at Lake St. Peter that evening, so I didn't bother setting up my SkyTracker and just took a few wide angled shots with my camera mounted on a tripod. Each image was shot at ISO 3200, f/1.4 @ 5 seconds on a Canon 70D and a Sigma 100mm ART lens. Images stacked with DeepSkyStacker.

Some quick test images taken from my backyard.

 

It's nearly that time again for the webinar: Astrophotography 101: Getting Started Without Getting Soaked

 

AND the in-the-field Astro 201 sessions (San Francisco Bay Area). Real soon now will be the "Processing Your Astrophotography Data" webinar, too!

 

Data:

20 x 45 second exposures, ISO 800

Orion ED80 Refractor (600mm f/7.5)

Canon 50D, prime focus

 

Mount:

Orion Sirius GoTo

Unguided.

 

Processing:

DeepSkyStacker

   

©Copyright 2012 Steven Christenson

StarCircleAcademy.com (or the BLOG)

TheAmusing.com

All Rights Reserved!

 

What does "All Rights Reserved" mean? It means that without written permission from me you may not: copy, transmit, modify, use, print or display this image in any context other than as it appears in Flickr. Any other use is copyright theft. You don't want to go there!

Canon EOS 450D prime focus Skywatcher 150 Explorer Newtonian. EQ3-2 mount. 24 lights (30s ISO1600), 10 darks, 20 flats, 20 bias. DeepSkyStacker > PixInsight > Photoshop CS5. Reprocessed including the DarkStructureEnhance script in PixInsight to bring out more of the dust lane structures.

Imaged on 11-03-20

 

Explore Scientific ED102/ASI 533 MC Pro camera with Optolong L-eNhance filter, and Stellarview FF/0.80FR.

180 second exposures at gain 104/offset 50

Total integration of 5 hours with a 91% illuminated moon.

Processed in DeepSkyStacker and Photoshop.

This is a restacking of the previous image processed on just a portion of the overall image so that I could use the 3x Drizzle setting in Deep Sky Stacker to try and improve the resolution of the nebula.

 

Also tried a couple new tools in The Gimp for cleaning up noise, setting the black point etc.

 

The photo consists of 30x 20 second exposures at ISO1600 on a Canon T1i DSLR at prime focus on a 10 inch SN-10AT telescope using a light pollution filter. 10 minutes total exposure time.

Another of my wide-field images from last weekend.

11 x 3-minute exposures at ISO 1600, f/4.

Registered and stacked using DeepSkyStacker software.

Unmodified EOS 40D with Canon 100mm f2.8 macro lens, piggybacked on a Celestron C8 telescope. Unguided.

This is the same stack of photos from my last star trails effort. 40 pics, this time the stars are aligned so the foreground seems to 'move', the tree branches as a result are blurred. Next time I'll try it without the foreground.

 

Nikon d5100

18mm

Stack of 40 20sec exposures

ISO 640

f5

 

Stacked using the freeware DeepSkyStacker.

20*30sec exposure Iso1600

No Dark/Flat

Taken with Canon 1100D 200mm

Tracked with Celestron Nexstar 130Slt mount

DeepSkyStacker, Photoshop

  

Canon EOS T3i (600D)

Canon EF 50mm f/1.8 II Lens

82 x 8sec subs, ISO 3200, f/1.8

15 dark frames

Stacked in DeepSkyStacker

Finished in Lightroom

Canon 450d Full Spectrum

CGEM-DX C-11 prime 2800mm FL f/10

no filters

32 X 30 sec = 16 minutes

iso 1600

no darks, no bias, no flats

deepskystacker 3.3.2

60x 15 exposures combined using DeepSkyStacker, showing Comet Lovejoy on 24 Jan 2015. The comet wasn't visible to the naked eye (at least, not mine), so I attached the camera (+100mm) lens to the side of the telescope.

Shotdate 21-02-2011

Camera: Nikon D3x

Optics: Celestron 9.25" Edge HD

Guiding: LVI AutoGuider 2

Mount: Sky-Watcher HEQ6 Pro

 

1:1 crop (cut for Flickr)

 

-----------------------------------------------

 

11 frames of 300 seconds (ISO: 800) - total exposure: 55 mn 4 s

 

RGB Channels Background Calibration: Yes

Per Channel Background Calibration: No

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

 

Offset: 120 frames exposure: 1/8000 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

 

Dark: 8 frames exposure: 5 mn

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

 

Flat: 40 frames exposure: 1/2 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

 

Staking: DeepSkyStacker 3.3.2

 

-----------------------------------------------

 

Postprocessing: PixInsight 1.6

 

DynamicBackgroundExtraction

HistogramTransformation

HDRWaveletTransform

ACDNR

Saved the image with preforming five times a HistogramTransformation and saving each transformation in 32-bit TIF for making HDR composite

HDRComposite function

ChannelExtraction L (For a lightness mask)

HistogramTransformation on L

Applied the mask L

CurvesTransformation

HistogramTransformation

Shotdate 07-03-2011

Camera: Nikon D3x

Optics: Celestron 9.25" Edge HD

Guiding: LVI AutoGuider 2

Mount: Sky-Watcher HEQ6 Pro

 

Previous version: www.flickr.com/photos/14721988@N02/5523953604/in/set-7215...

 

--------------------------------------------------------

 

Stacked in DeepSkyStacker 3.3.2

 

19 frames 300 seconds (ISO: 800) - total exposure: 1 hr 20 mn 11 s

 

RGB Channels Background Calibration: Yes

Per Channel Background Calibration: No

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

 

Offset: 120 frames exposure: 1/8000 s

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

 

Dark: 10 frames exposure: 5 mn 7 s

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

 

Flat: 40 frames exposure: 1/4 s

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

 

--------------------------------------------------------

 

Processed in PixInsight 1.7

 

ScreenTransferFunction

DynamicCrop

DynamicBackgroundExtraction

ChannelExtraction

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

HistogramTransformation: Processing view: Autosave002_DBE_L

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

HistogramTransformation: Processing view: Autosave002_DBE_L

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

HistogramTransformation: Processing view: Autosave002_DBE_L

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

HistogramTransformation: Processing view: Autosave002_DBE_L

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

HistogramTransformation: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

HistogramTransformation: Processing view: Autosave002_DBE_L

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

HistogramTransformation: Processing view: Autosave002_DBE_L

CloneStamp: Processing view: Autosave002_DBE_L

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

HistogramTransformation: Processing view: Autosave002_DBE_L

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

ChannelExtraction

HistogramTransformation: Processing view: Autosave002_DBE_L

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

ATrousWaveletTransform: Processing view: Autosave002_DBE_L

HistogramTransformation: Masking from swap files L

HistogramTransformation

CurvesTransformation

ACDNR

 

Mask's either inverted or normal.

1 2 ••• 61 62 64 66 67 ••• 79 80