Results 1 to 10 of 10
  1. #1
    rhb007's Avatar
    rhb007 is offline Bright Giants
    Points: 8,089, Level: 62
    Level completed: 80%, Points required for next Level: 61
    Overall activity: 0%
    Achievements:
    365 Days+ Registered Achievement!50 Posts Achievement!5 Threads Achievement!First 1000 Experience Points750 Days+ Registered Achievement!
    Join Date
    Mar 2011
    Location
    San Mateo, CA
    Posts
    319
    Points
    8,089
    Level
    62
    Thanks
    2
    Thanked 98x 70 Posts

    Default Observation Help. Please



    I got my 8" Dobsonion about a month a ago, and I am brand new in using it. I was able to see M42, split the double in Castor, see Alcor and Mizar, and when Saturn got high enough in the sky was able to get a sharp view. It was small and very little detail, but I did see the separation between the disk and the rings.
    I then tried to find M51, which I thought should be easy. According to Stellarium, it's within about 4 deg. of Alkaid. I thought if I put one side of the telrad circle on Alkaid, M51 should be within the FOV of the findersope (6x30RACI). Stars are pinpoints of light, but M51 should be blurry. I thought. I searched for about 1 1/2 hours and never found it.
    Is this too hard a target for a novice? Is a 6x30 not enough to pick it up? Or am I doing something wrong? Or am I not looking for the right thing?
    I was using a 25mm Plossel Finally, is this a wrong technique to begin with.
    Thanks in advance for any help.
    Bob (rhb007)
    Orion Skyquest XT8 Classic
    25mm, 10mm Sirius Plossels, Explore Scientific 82 deg. 18mm,2X Barlow
    Explore Scientific ED102 Triplet Refractor
    EasyfinderII, Telrad and 6x30 RACI Finder
    Orion Sirius EQ-G Go To Mount ES Twilight 1 alt/az mount

  2. The Following User Says Thank You to rhb007 For This Useful Post:

    rick-semi (05-07-2011)

  3. #2
    GRB1984's Avatar
    GRB1984 is offline SUPER GIANT
    Points: 4,695, Level: 46
    Level completed: 73%, Points required for next Level: 55
    Overall activity: 0%
    Join Date
    Mar 2011
    Location
    Britsh Columbia
    Posts
    881
    Points
    4,695
    Level
    46
    Thanks
    250
    Thanked 254x 189 Posts

    Default

    I view from a pretty light polluted area, and have no hope of seeing M51 in my 9x50 finder. I need to be looking in the eyepiece to spot it. Should be able to see it with your 8" scope no problem.
    Josh L.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    8" Traditional Dob, TeleVue X2
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    , ES 82* 14mm, Baader Hyperion 17mm, GSO Superview 20mm and 30mm, Antares w70 25mm, Antares variable
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    filter

    "I was born not knowing and have had only a little time to change that here and there."
    Richard Feynman

  4. #3
    dmbryan's Avatar
    dmbryan is online now Super Moderator
    Points: 38,508, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 25.0%
    Achievements:
    First 1000 Experience Points200+ Posts Achievement!Got three Friends100+ Threads Achievement!365 Days+ Registered Achievement!
    Join Date
    Jun 2009
    Location
    b'ham alabama
    Posts
    5,578
    Points
    38,508
    Level
    100
    Thanks
    4,795
    Thanked 1,938x 1,521 Posts

    Default

    Hang in there you'll find it. As Josh said, use your low power eyepiece and just scan out from Alkaid to Cor Coralli. You'll find two faint fuzzies. If you keep on going you'll even find some more. Good luck and have fun.
    name: Derek

    Various
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    and such.

  5. #4
    samgray1's Avatar
    samgray1 is offline HYPER GIANT
    Points: 22,398, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    10 Days registeredGot three Friends200+ Posts Achievement!365 Days+ Registered Achievement!First 1000 Experience Points
    Join Date
    Apr 2010
    Location
    San Diego, Calif., USA
    Posts
    1,869
    Points
    22,398
    Level
    100
    Thanks
    806
    Thanked 832x 581 Posts

    Default

    I agree with the others. Even under fairly dark skies, I can't see M51 in my finderscope.

    The best way to attack it is to point the telescope where you think it should be and using your lowest power EP look through the telescope to see if you see it. If you don't see it, then do a scan of the immediate area while still looking through the EP.

    Good luck and clear skies.
    Name: Sam
    Equipment:
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    12” Collapsible Dob w/Telrad, Explore Scientific 30mm 82*, and 20mm, 14mm, & 9mm 100* EPs, Tele Vue 4X Powermate & Paracorr T2, 2" Lumicon UHC and ND13 (
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ) Filters, 2" Astronomik OIII filter, dew heater system, and Nikon Action 7x50 EX Extreme ATB 6.4* binoculars & Celestron 15x70 binoculars.

    I'm enjoying learning the sky by star hopping; just charts, my binoculars, and my Dob!

  6. #5
    jimt's Avatar
    jimt is offline Super Moderator
    Points: 37,302, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    200+ Posts Achievement!First 1000 Experience PointsGot three Friends20+ Friends Achievement!5+ Referrals Achievement!
    Join Date
    Jul 2009
    Location
    North Georgia
    Posts
    5,715
    Points
    37,302
    Level
    100
    Thanks
    1,338
    Thanked 2,734x 1,769 Posts

    Default

    If you can find the Big Dipper you can find M51. Look at the last star in the handle of the Big Dipper Alkaid, pan that area and you are bound to run across it. See Attached. You can do it!

    Jim
    Attached Images Attached Images
    Celestron C9.25. Atlas EQG mount. Canon 500D unmodded, Celestron ST80 guide scope, SSAG, Meade 6.3 FR, Thousand Oaks dew control with Dewnot straps. Zhumell 8/24mm Zoom, 2"Gso Superview 42mm, Meade 2"QX wide angle 30MM, Meade 1.25 EP and filter set. Tasco 10x50 Zhumell 20x80 bino and a few other odds and ends.
    Now where did I put that clear sky button!

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  7. The Following 3 Users Say Thank You to jimt For This Useful Post:

    andyp180 (05-06-2011),Avarielle (05-07-2011),rick-semi (05-07-2011)

  8. #6
    rhb007's Avatar
    rhb007 is offline Bright Giants
    Points: 8,089, Level: 62
    Level completed: 80%, Points required for next Level: 61
    Overall activity: 0%
    Achievements:
    365 Days+ Registered Achievement!50 Posts Achievement!5 Threads Achievement!First 1000 Experience Points750 Days+ Registered Achievement!
    Join Date
    Mar 2011
    Location
    San Mateo, CA
    Posts
    319
    Points
    8,089
    Level
    62
    Thanks
    2
    Thanked 98x 70 Posts

    Default Observation Help, Please

    Thanks everyone for the encouragement. It seems I'm in the right church, but the wrong pew.
    If I have understood correctly I should try to get the telescope pointed in the area of M51 with the telrad circle, but dump the finder and systematically scan the area through the eyepiece of the telescope.
    I'll try that and let you know how it turns out.
    Bob
    Orion Skyquest XT8 Classic
    25mm, 10mm Sirius Plossels, Explore Scientific 82 deg. 18mm,2X Barlow
    Explore Scientific ED102 Triplet Refractor
    EasyfinderII, Telrad and 6x30 RACI Finder
    Orion Sirius EQ-G Go To Mount ES Twilight 1 alt/az mount

  9. #7
    EMarkM's Avatar
    EMarkM is offline Main Sequence
    Points: 1,890, Level: 26
    Level completed: 90%, Points required for next Level: 10
    Overall activity: 0%
    Achievements:
    200+ Posts Achievement!First 1000 Experience Points365 Days+ Registered Achievement!750 Days+ Registered Achievement!2 Posts Achievement
    Join Date
    Feb 2011
    Location
    Cheshire UK
    Posts
    188
    Points
    1,890
    Level
    26
    Thanks
    68
    Thanked 72x 58 Posts

    Default

    Good luck: my friend at work has just reported seeing M51 for the first time, from a town-centre location, and is thrilled to bits with the experience.

    He's making a pretty fair dent in his Messier list

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    : Sky-Watcher Explorer 200P (200mm f/5 Newt GEM)
    EPs: S-W 2x
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    , S-W 10 & 25mm, Tele Vue 26mm, Or 12.5mm, Or 18mm, Charles Frank UWA (needs calibrating to establish
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    )
    Bins: Meade 10x50 7º, Fumoto 8x40 9º
    Cameras: Canon 5D Mk II & Canon 400D

  10. #8
    rory's Avatar
    rory is offline SUPER GIANT
    Points: 10,150, Level: 69
    Level completed: 67%, Points required for next Level: 100
    Overall activity: 0%
    Achievements:
    200+ Posts Achievement!First 1000 Experience Points400+ Posts Achievement365 Days+ Registered Achievement!50 Posts Achievement!
    Join Date
    Jan 2011
    Location
    worcestershire, uk
    Posts
    945
    Points
    10,150
    Level
    69
    Thanks
    311
    Thanked 294x 209 Posts

    Default

    ive only a 90mm appeture and found some of the brighter globular clusters a great way to break up the night if the galaxies arn't coming out to play.
    i spend about an hour at a time searching for galaxies,after which if im getting frustrated (quite often as ive only seen one so far !) i'll switch for a while and look at other objects.and globulars i would imagine would be great in your dob.
    good luck..keep on truckin

  11. #9
    jrkirkham's Avatar
    jrkirkham is offline HYPER GIANT
    Points: 34,653, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    200+ Posts Achievement!First 1000 Experience Points365 Days+ Registered Achievement!Visitor Messenger Achievement!Got three Friends
    Join Date
    Oct 2009
    Location
    Illinois, USA
    Posts
    2,793
    Points
    34,653
    Level
    100
    Thanks
    1,042
    Thanked 1,527x 887 Posts

    Default

    I have three comments:

    1) I agree with all the others.

    2) I remember my first time looking for M51. Like you, I had a hard time. I was moving from the brighter objects to star hopping. With an 8" dob you see a lot more stars than you expect. I kept getting my distances off. I would look for star patterns in the wrong places. As you come away from the brighter stars in the dipper's handle, there are some faint formations that look similar to the ones you expect to see while star hopping. Go just a little farther. That helped me. On some searches I found that I went too far. On M51 I wasn't going quite far enough.

    3) You are correct, there are some DSO's that are difficult for the novice, but you aren't a novice anymore. Your question is the typical question that all of us have as we jump from the easier stuff to the slightly more challenging. You'll find it. You've got the glass and the gusto.
    Rob
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.


    Current Projects: nothing organized, just preparing for retirement in a few years
    Main Scopes: Orion XT10, Dob / ES ED80T / Orion 90mm Mak-Cass / 50 mm Galileoscope refractor / Celestron 8" SCT / Orion Sirius Mount / Various cameras and lenses

  12. #10
    Joe Lalumia's Avatar
    Joe Lalumia is offline HYPER GIANT
    Points: 61,001, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    200+ Posts Achievement!Ghost Achievement! Averaging 5+ posts a day!Got three FriendsFirst 1000 Experience Points20+ Friends Achievement!
    Join Date
    Jun 2010
    Location
    Quinlan, Texas
    Posts
    10,947
    Points
    61,001
    Level
    100
    Thanks
    6,772
    Thanked 5,156x 3,400 Posts
    Blog Entries
    1

    Default

    FAINT fuzzy object-- except from dark skies.
    ETX 125PE, Stellarvue 80mm BV & Televue TelePod tripod,
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    8" LNT, 10x50, 15x70mm binoculars, Stellarvue binoviewers, solar filters for all three
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ..... plus a bunch of ham radios... Ham radio call sign - W1XWX

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.


    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    TelescopeMan Web Site

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    search for W1XWX to see my amateur radio web site

    "If you can't explain it to a six year old, you don't understand it yourself.” - Albert Einstein

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

 

 

Similar Threads

  1. My first observation!
    By lidar in forum Astronomy Beginners Forum
    Replies: 6
    Last Post: 06-25-2010, 02:13 AM
  2. My first observation
    By Romanrp in forum Astronomy Reports Forum
    Replies: 4
    Last Post: 10-01-2009, 06:13 AM
  3. observation report
    By md in forum Amateur Astronomy Forum
    Replies: 0
    Last Post: 06-19-2005, 01:26 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin® Version 4.2.0
Powered by vBulletin®
All times are GMT. The time now is 07:49 PM.