Took me ages to realise that there were Hubble/Sloan icons. They sit next to the invert button,which has an action. If the Hubble/Sloan icons have actions I don't experience them on the iPad (didn't try on my laptop earlier). It feels like click if them should do something. Can I suggest a little popu saying "this image was taken using the Hubble Space Telescope" or something similar.

CANDELS subjects have changed. Final import of new subjects needs to occur.

As sent through by Ed Prather on 31st August

Add an option to display RA and dec in sexagesimal (HH:MM:SS, DD:MM:SS) as well as in the current decimal degree format

One of the main ways that I envisioned this tool being used was comparing images at different wavelengths, not just looking at them individually. I think that's where much of the potential science lies - seeing if a galaxy feature is a dropout in one band but not another, for example. Right now, there's no simple way to look at H vs. J at the same time. I think we absolutely need the ability to either a) blink back and forth between images, b) tile them so the user can see two (or more) FITS images at once in the browser window or c) color-combine the images. I would eventually love to do all three, but I want to hear from your team what will be easiest to implement in the near future.

Neither logarithm and square root stretches work on the image if the left slider is set to less than zero; the entire image goes black, presumably because it's trying to compute a range where one end is an imaginary number. This really needs to be fixed - maybe add an offset to all pixel values.

If the classify page was just a few (10?) pixels shorter then it would need no scrolling on an iPad. At the moment the words below the icons are just hidden on load. Since it is so useable on the iPad, it seems best to optimise where possible.

Label both axes on the histogram of pixel values

Lose the exclamation mark at the end of this piece :

http://www.galaxyzoo.org.s3-website-us-east-1.amazonaws.com/#/science

Reduces filesize to about 170KB

We need to swap the images at

candels-15_a-2_0.jpg
candels-15_a-1_0.jpg

as they appear in the help text - they're currently the wrong way round.

Perhaps 3?

We don't have it.

Does what it says on the tin.

What are the units of intensity in the metadata?

Examine page background needs to extend lower - currently the image sticks out of the rectangle.

On iOS the button below your previous touch, is already selected when the question appears. So on iOS, one answer is always pre-selected - which would bias the answers. For example, is you tap Smooth then Completely Round is accidentally clicked too.

Can we make an obvious link to Galaxy Zoo from mygalaxies.co.uk

For example, can we say on the results page : Click here to find galaxies of your own from Galaxy Zoo?

Chris

Please change to :

Disc galaxies are very thin, so look different when viewed from the side. We're trying to find exactly edge-on galaxies with this question. If the galaxy looks needle-like, perhaps with a bulge at the centre, then click "yes," otherwise choose "no" (even for galaxies almost edge-on).

Please add :

If you have any questions about this object, or think it may be interesting to others, or just have something to say, you can start a discussion on Talk by clicking "Yes". Talk will open in a new window - just close it to come back to the classification page.

In the main page splash, if it can read Sloan Digital Sky Survey rather than SDSS ('Experience a privileged glimpse of the distant universe, observed by the SDSS and Hubble Telescope') and Hubble Space Telescope instead of Hubble Telescope that'd be good.

If both changes make the subhead too long, then just change Hubble.

The top bar needs to link to the forum as discussed with Miller and Arfon.

If you've loaded a band and have adjusted the histogram when you click a new filter the limits aren't reset - is this intentional?

Apache 2, MIT, GNU?

...and that we're submitting a new one to the App Stores

Header: https://www.dropbox.com/s/g4p6wg9hwukikx1/gz_headerimage.jpg

Slideshow: https://www.dropbox.com/s/58wtx47a7vb41c6/gz_slideshowimage.jpg

Additional example galaxies for the barred/unbarred and 'count number of spiral arm' question for Sloan should be added.

They have been emailed to [email protected] by me. Case 254

When reaching the 'how obvious is the bulge' question for Hubble objects it has only three options and they all have the same icon

Please add this text to data.galaxyzoo.org, under table 2

Please note : The provided flags are there for the convenience of those who do not want to get into the details too much, they are based upon a threshold of 0.8. However, there is a complication in the debiasing. The classification bias depends on whether one uses the type likelihoods directly, or applies a threshold. The bias is worse if thresholds are used. I therefore applied bias corrections computed in consistent fashion. So, for the debiased type likelihoods I computed the bias correction based on the elliptical/spiral ratio using the likelihoods directly; for the type flags I debiased the raw type likelihoods using a correction based on the elliptical/spiral ratio determined after applying a 0.8 threshold, and then applied the same threshold to produce the flags. Therefore, the type flags do not correspond to simply applying a 0.8 threshold on the debiased type likelihoods, though for many galaxies these will agree.

In SDSS tree, 'Is there a sign of a bar' should be 'Is there any sign of a bar'

Masters et al. 2012. Galaxy Zoo and ALFALFA: atomic gas and the regulation of star formation in barred disc galaxies. MNRAS 424, 2180 (available here: http://arxiv.org/abs/1205.5271)

Skibba et al. 2012. Galaxy Zoo: the environmental dependence of bars and bulges in disc galaxies. MNRAS 423, 1485 (available here:http://arxiv.org/abs/1111.0969 )

Updates (adding MNRAS number and/or changing year of publication):

Shabala et al. (2011->) 2012 MNRAS 423, 59

Kaviraj et al. (2011->) 2012 MNRAS 423, 49

Darg et al. 2011, MNRAS 416 1745

Hoyle et al. 2011 MNRAS 415, 3627

Structure of subject metadata should be the same regardless of the survey. e.g. Hubble has metadata['bands'], whereas Sloan does not have this.

Unless there's a reason for the different formats, we should have them conform the to same structure.

Is there a reason for having the id prefaced by the survey? e.g. "hubble_id" and "sloan_id". Why not just id?

The science team would like the first 'features or disk' button in the Hubble classification only to more properly reflect the fact that blobby clumpy things should be included. The suggestion is that one replaces one of the spiral galaxies with a blobby irregular. This is not important enough to delay launch.

After 3 (?) classifications
Reset counter after login/signup to prevent pestering by quiz prompt.

I'm not sure what the big 'Hubble' is doing as a header in the main splash near the top of the page. Not feeling very inspired, but 'Explore' would be better...

When examining an image in H-band, for example, I played with the stretch to look at specific features. If I then switch to I or J band, the stretch is automatically reset. If possible, let's have the default be that the stretch remains the same when switching between wavelengths.

I've had a few comments that indicate that people aren't realising that they should click the example images to make them larger. Can we add 'Click to see a larger image' to the relevant help text?

Hubble isn't a survey - it's a telescope. Do the FITS headers give information as to their survey? (ie, AGES, GEMS, UDS, etc)? If so, let's replace the field with something like "Survey: AGES (Hubble Space Telescope)"

The list of project areas is centre-aligned in an offset Dropdown div from the Zooniverse bar (Safari, Mountain Lion). It just looks weird to me.

Clicking this button repeatedly results in multiple of these sections:

X, Y
Intensity