Hemisphere:  Northern  ·  Constellation: Aquila (Aql)
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What could it be? SOLVED, 



    
        

            Andrea Pistocchini - pisto92
What could it be? SOLVED
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What could it be? SOLVED

Technical card

Imaging telescopes or lenses: Tecnosky Apo triplet 80/480

Imaging cameras: Canon 450D Modded

Mounts: Skywatcher NEQ6 PRO

Guiding telescopes or lenses: SkyWatcher 70/500

Guiding cameras: QHY5 II

Focal reducers: TecnoSky Spianatore/riduttore 0,8x

Software: PixInsight 1.8  ·  Photoshop CS6

Filters: Hutech IDAS 2" LPS D1


Dates:May 16, 2015

Frames: 18x420"

Integration: 2.1 hours

Avg. Moon age: 27.70 days

Avg. Moon phase: 3.74%


Basic astrometry details

Astrometry.net job: 639180

RA center: 19h 20' 53"

DEC center: +13° 33' 50"

Orientation: -179.824 degrees

Field radius: 0.294 degrees


Resolution: 620x558

Locations: Lake Delio, Maccagno, Varese, Italy

Description

Ieri sera stavo fotografando una LDN nell'Aquila. Oggi analizzando le foto mi sono reso conto di questo strano "alone" intorno alla stella HD 181683. Ho pensato ad un riflesso, ma mi sembra troppo irregolare per esserlo. Così ho fatto delle ricerche, aiutato da alcuni amici, e non ho trovato nulla di simile tra alcune lastre. Secondo voi cosa potrebbe essere?

La versione animata è composta da 4 immagini:
1- POSS1 rosso
2- POSS1 blu
3- POSS2/UKSTU IR
4- La mia ripresa, 18x420 sec

VERISIONE E
1- 600 sec con toa 150 da Nerpio in Spagna
2- La mia ripresa
I cerchi gialli indicano 3 oggetti che sono presenti nella foto da Nerpio e non nella mia

SOLUZIONE (VERSIONE F) : GRANELLO DI POLVERE O GOCCIA D'ACQUA :D

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Last night I was photographing an LDN nebula in Eagle. Today in all shots (VERSION B, single shot) I realized this strange "aura" around the star HD 181683. I thought such a reflection, but it seems to be too irregular. So I did some research, helped by some friends, and I haven't found anything like that. In your opinion what could it be?

The animated version (VERSION C) is composed of 4 images:
1- red POSS1
2- blue POSS1
3- POSS2/UKSTU IR
4- My image, 18x420 sec

VERSION E:
composition of 2 images:
1- TOA 150 from Nerpio in Spain, 600 sec in Luminance
2- My image
Yellow ring with 3 different object in this 2 images

SOLUTION (VERSION F) : DUST GRAIN OR WATER :D

Comments

Revisions

  • What could it be? SOLVED, 



    
        

            Andrea Pistocchini - pisto92
    Original
  • What could it be? SOLVED, 



    
        

            Andrea Pistocchini - pisto92
    B
  • Final
    What could it be? SOLVED, 



    
        

            Andrea Pistocchini - pisto92
    C
  • What could it be? SOLVED, 



    
        

            Andrea Pistocchini - pisto92
    D
  • What could it be? SOLVED, 



    
        

            Andrea Pistocchini - pisto92
    E
  • What could it be? SOLVED, 



    
        

            Andrea Pistocchini - pisto92
    F

Sky plot

Sky plot

Histogram

What could it be? SOLVED, 



    
        

            Andrea Pistocchini - pisto92