Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  LBN 203  ·  NGC 6888  ·  Sh2-105
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NGC 6888 Ha, Rodd Dryfoos
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NGC 6888 Ha

Getting plate-solving status, please wait...
NGC 6888 Ha, Rodd Dryfoos
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NGC 6888 Ha

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Description

It has been a long time since I uploaded a mono image.  This one is of the Crescent Nebula.  Conditions have been deplorable lately, so I didn't have much hope for a single night sandwiched between cloudy evenings.  I got lucky and the wind died down and seeing was at least fair.  A 94% Moon limited me to Ha.  Most of the galaxies that are in good positions to start a project are small with slight Ha emissions.  So I decided to wait until Cygnus rose above the mire of the horizon (about midnight).  I was able to let the rig run until morning and am pleased with the result--usually when I try this focus drift ruins the last couple of hours.  I am looking forward to collecting lots more Ha and OIII data (maybe even some RGB for teh stars).

Comments

Revisions

    NGC 6888 Ha, Rodd Dryfoos
    Original
    NGC 6888 Ha, Rodd Dryfoos
    C
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    H
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    I
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    M
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    N
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    O
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    P
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    Q
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    R
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    S
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    Z
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    BA
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    BC
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    BD
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    BE
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    BF
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    BG
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    BH
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    BI
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    BJ
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    BK
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    BL
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    BM
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    BN
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    BO
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    BQ
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    BR
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  • Final
    NGC 6888 Ha, Rodd Dryfoos
    BT

C

Description: h80a - added 4 more hours of Ha

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D

Description: h80d - final mono version

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E

Description: h80bin2 - Bin 2

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F

Description: h80bin2a - a bit of star control

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G

Description: Newa-2

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H

Description: Bin 2x2

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I

Description: Newbin2c2 - bin2 reprocessed

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J

Description: 49b

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K

Description: 46b

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L

Description: h60bin2

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N

Description: Ha57-H2

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Q

Description: x6

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R

Description: x6bin2b

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S

Description: x6bin2c

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X

Description: 157c

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BA

Description: HOO2

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BB

Description: HOO3a

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BC

Description: HOO3b

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BD

Description: HOO3c

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BE

Description: HOO3c-ip

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BG

Description: HOO4A

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BK

Description: Sharpening

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BM

Description: X2

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BO

Description: zzzz3bin2

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BQ

Description: 19c3

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BR

Description: 19cbin2

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BS

Description: 19cbin2a

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Sky plot

Sky plot

Histogram

NGC 6888 Ha, Rodd Dryfoos